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Journal articles on the topic 'Satellite system'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 March 2023

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1

Saiko, Volodymyr, Teodor Narytnyk, Valeriy Gladkykh, and Natalia Sivkova. "INNOVATIVE SOLUTION FOR LEO-SYSTEM WITH DISTRIBUTED SATELLITE ARCHITECTURE." Information systems and technologies security, no. 1 (2) (2020): 77–83. http://dx.doi.org/10.17721/ists.2020.1.77-83.

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An innovative solution for practical implementation in a LEO system with a "distributed satellite" architecture that can be used to provide low-orbital spacecraft communications with ground stations and users of 5G / IoT satellite services is proposed. The essence of the proposed development in the system of low-orbital satellite communication with FC-architecture is that to reduce the delay in signaling to consumers and the probability of overloading the network into a prospective system of low-orbital satellite communication, which contains artificial Earth satellites, each of which function

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Utami, Vi Bauty Riska, Imam MPB, and Shinta Romadhona. "Analysis the impact of sun outage and satellite orbit at performance of the telkom 3S satellite communication system." JURNAL INFOTEL 13, no. 3 (2021): 134–42. http://dx.doi.org/10.20895/infotel.v13i3.626.

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Satellites of communication are located at altitude of thousands kilometers above the earth's surface, so the signal is transmitted by satellite to earth station is very susceptible to interference. Every March and September equinox or when the sun crosses the Earth's equator for several days, earth station occurs a naturally interference called by sun outage. At this time, satellite and the sun reach the closest distance because satellite's position is same direction with the sun. This interference makes the signal received by earth station weaken and even disappears due to temperature noise

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Zheng, Jun Hua, and Chang Ju Wu. "Design of Moving System for Pico-Satellite Deployer." Applied Mechanics and Materials 325-326 (June 2013): 1009–13. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.1009.

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Pico-satellite’s potential use is increasingly gaining nation’s recognition. Because of its small volume and light weight, it is necessary to develop the special deployer. The key technologies of Zhejiang University Pico-Satellite Deployer (ZDPSD) are, cutter unlocking the door, conical spring driving the pico-satellite, oriented rail restricting the direction and locking shaft fixing the door. In September 2010, the two pico-satellites were launched and deployed successfully at the predetermined orbit. The paper includes designing and analyzing of the moving system, mode analyzing of the depl

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Klaes, K. Dieter, Marc Cohen, Yves Buhler, et al. "An Introduction to the EUMETSAT Polar system." Bulletin of the American Meteorological Society 88, no. 7 (2007): 1085–96. http://dx.doi.org/10.1175/bams-88-7-1085.

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The European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) Polar System is the European contribution to the European–U.S. operational polar meteorological satellite system (Initial Joint Polar System). It serves the midmorning (a.m.) orbit 0930 Local Solar Time (LST) descending node. The EUMETSAT satellites of this new polar system are the Meteorological Operational Satellite (Metop) satellites, jointly developed with ESA. Three Metop satellites are foreseen for at least 14 years of operation from 2006 onward and will support operational meteorology and climate moni

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Sochacki, Mateusz, and Janusz Narkiewicz. "Propulsion System Modelling for Multi-Satellite Missions Performed by Nanosatellites." Transactions on Aerospace Research 2018, no. 4 (2018): 58–67. http://dx.doi.org/10.2478/tar-2018-0030.

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Abstract Progress in miniaturization of satellite components allows complex missions to be performed by small spacecraft. Growing interest in the small satellite sector has led to development of standards such as CubeSat, contributing to lower costs of satellite development and increasing their service competitiveness. Small satellites are seen now as a prospective replacement for conventional sized satellites in the future, providing also services for demanding users. New paradigms of multi-satellite missions such as fractionation and federalization also open up new prospects for applications

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Machida, Kazuo, and Toshiaki Iwata. "Development of Space Environment Preservation System Using Robot." Journal of Robotics and Mechatronics 18, no. 1 (2006): 67–75. http://dx.doi.org/10.20965/jrm.2006.p0067.

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We propose the concept of a robot-oriented space system called the “Space Environment Preservation System” that maintains a satellite constellation and orbit, and develop the basic technologies. A space maintenance vehicle carries and assembles modularized satellites, and places them in orbit. It captures and diagnoses them and replaces malfunctioning modules, to increase the reliability and life of the satellite constellation. It also collects, disassembles and removes satellites from orbit at the end of a mission, helping to preserve the space environment. In order to realize the system, the

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Papiya, Sumaiya Janefar, Dr Bobby Barua, and Mehnaz Hossain. "Prospects Challenges of Bangabandhu Satellite-2." International Journal of Advanced Networking and Applications 14, no. 02 (2022): 5342–52. http://dx.doi.org/10.35444/ijana.2022.14204.

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The development of the Bangabandhu Satellite-1 has changed the direction of Bangladesh's satellite communication research. Bangladesh's dream project was the Bangabandhu Satellite 1. This satellite's primary goal is to maintain effective internet and communication services in remote places. First of all, we must concentrate to the depth of satellite communication system and its process to reach any conclusion. Our main goal of the research is to recognize a feasibility review on Bangabandhu satellite-2. So, for the feasibility studies we reviewed the most promising technical parts of Bangaband

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Ильченко, Михаил Ефимович, Теодор Николаевич Нарытник, Борис Михайлович Рассамакин, Владимир Ильич Присяжный та Сергей Владимирович Капштык. "СОЗДАНИЕ АРХИТЕКТУРЫ «РАСПРЕДЕЛЕННОГО СПУТНИКА» ДЛЯ НИЗКООРБИТАЛЬНЫХ ИНФОРМАЦИОННО-ТЕЛЕКОММУНИКАЦИОННЫХ СИСТЕМ НА ОСНОВЕ ГРУППИРОВКИ МИКРО- И НАНОСПУТНИКОВ". Aerospace technic and technology, № 2 (26 квітня 2018): 33–43. http://dx.doi.org/10.32620/aktt.2018.2.05.

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Presented are the results of an analysis of the growing interest in the use of low Earth orbits (up to 1500 km high) for the introduction and development of the Internet of things (Internet of Things - IoT). Industrial Internet of things (Industrial Internet of Things-IIoT). Internet of things for remote areas (Remote Internet of Things - RioT, for the purposes of scientific research and economic use of natural resources, control of the development and operation of infrastructure projects, the operation of territorially distributed industrial production, transport infrastructure. Factors signi

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9

Loh, Robert. "GPS Wide Area Augmentation System (WAAS)." Journal of Navigation 48, no. 2 (1995): 180–91. http://dx.doi.org/10.1017/s0373463300012649.

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Today, no single technology has more broad-reaching potential for worldwide civil aviation than the future applications of satellite technology. These applications represent the greatest opportunity to enhance aviation system capacity, efficiency and safety since the introduction of radio-based navigation systems more than 50 years ago. The foundation for this optimism is the Global Positioning System (GPS), a satellite-based radio navigation system operated and controlled by the United States Department of Defense (DoD). In December 1993, DoD declared GPS to be in initial operational capabili

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10

Midthassel, Rolv, and Harald Ernst. "A mobile multimedia satellite system reusing existing satellites." International Journal of Satellite Communications and Networking 26, no. 5 (2008): 445–61. http://dx.doi.org/10.1002/sat.904.

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11

Chauhan, Mayur, Teesha Sonawane, Yash Mehta, and Mahalaxmi Palinje. "Review on Automatic Antenna Tracking System For LEO Satellites." International Journal for Research in Applied Science and Engineering Technology 11, no. 1 (2023): 188–93. http://dx.doi.org/10.22214/ijraset.2023.48515.

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Abstract: This paper is about comparing the Yagi- Uda Antenna, Turnstile Antenna, Parabolic Antenna Phased Array Antenna with a different parameters required to track LEO Satellites and to receive the Telemetry Information from them. LEO Satellites is Low Earth Orbit typically organized as a satellite constellation. The number of Satellite LEO would be ten to even thousand to fully cover the globe. As LEO satellites move very quickly and are most visible for 20to 30 min during each pass, it requires an antenna that can track signals, and satellite paths, and upload anddownload as much data as

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12

Gong, Chang Qing, Zhen Chun Jiang, Chao Hui Huang, Ping Wang, and Tong Wu. "Optimization Analysis of GDOP of PL-Aided Navigation and Positioning System." Applied Mechanics and Materials 239-240 (December 2012): 544–47. http://dx.doi.org/10.4028/www.scientific.net/amm.239-240.544.

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The precision of satellite positioning system depends largely on the numbers and geometric layout of the positioning satellite, the GDOP is one of the important parameters to measure the geometric layout of positioning satellites. From the perspective of GDOP, the relation between a different pseudo-satellite location and layout for the accuracy of the positioning system has been studied. For the positioning of the four pseudo-satellites, the simulation analysis of the relationship of the GDOP parameter changes with the pseudo-satellite longitude, latitude and location of the user. Studies hav

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13

Zhao, Xiangyu, Chunjuan Zhao, Jiale Li, Yongliang Guan, Shanbo Chen, and Lei Zhang. "Research on Design, Simulation, and Experiment of Separation Mechanism for Micro-Nano Satellites." Applied Sciences 12, no. 12 (2022): 5997. http://dx.doi.org/10.3390/app12125997.

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The separation mechanism is a critical device that transports and releases satellites during launch and on-orbit. However, as satellites become smaller and more compact, the traditional belt-locking device or pyrotechnic release and separation device cannot meet the micro-nano satellite’s separation requirements. A novel separation mechanism kinematic system was designed, analyzed, and experimentally verified to achieve non-interference and non-pyrotechnic separation of the satellites from the launch vehicle while maintaining the initial separation attitude. First, an overall structural strate

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14

Xian, Di, Peng Zhang, Ling Gao, Ruijing Sun, Haizhen Zhang, and Xu Jia. "Fengyun Meteorological Satellite Products for Earth System Science Applications." Advances in Atmospheric Sciences 38, no. 8 (2021): 1267–84. http://dx.doi.org/10.1007/s00376-021-0425-3.

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AbstractFollowing the progress of satellite data assimilation in the 1990s, the combination of meteorological satellites and numerical models has changed the way scientists understand the earth. With the evolution of numerical weather prediction models and earth system models, meteorological satellites will play a more important role in earth sciences in the future. As part of the space-based infrastructure, the Fengyun (FY) meteorological satellites have contributed to earth science sustainability studies through an open data policy and stable data quality since the first launch of the FY-1A

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15

Cui, Jun Xia, and Hu Li Shi. "A Novel Satellite Telephone Communication System Based on SIGSO Satellite." Applied Mechanics and Materials 446-447 (November 2013): 1642–46. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.1642.

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In recent years, the coverage of terrestrial mobile communication network is more and more extensive, and the mobile phones have occupied the vast majority of voice communications in almost all countries. However, satellite voice communication system is still playing an irreplaceable role on the vast sea and the land area which are not covered by the land mobile communication network. The motion characteristics of the SIGSO satellites and its new demands and characteristics to the system are analyzed, and a novel very low rate satellite telephone system is put forward. The speech coding algori

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16

Tong, Minglei, Song Li, Xiaoxiang Wang, and Peng Wei. "Inter-Satellite Cooperative Offloading Decision and Resource Allocation in Mobile Edge Computing-Enabled Satellite–Terrestrial Networks." Sensors 23, no. 2 (2023): 668. http://dx.doi.org/10.3390/s23020668.

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Mobile edge computing (MEC)-enabled satellite–terrestrial networks (STNs) can provide task computing services for Internet of Things (IoT) devices. However, since some applications’ tasks require huge amounts of computing resources, sometimes the computing resources of a local satellite’s MEC server are insufficient, but the computing resources of neighboring satellites’ MEC servers are redundant. Therefore, we investigated inter-satellite cooperation in MEC-enabled STNs. First, we designed a system model of the MEC-enabled STN architecture, where the local satellite and the neighboring satell

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17

Xuan, Cheng, Li ZhiGang, Yang XuHai, Wu WenJun, Lei Hui, and Feng ChuGang. "Chinese Area Positioning System With Wide Area Augmentation." Journal of Navigation 65, no. 2 (2012): 339–49. http://dx.doi.org/10.1017/s0373463311000750.

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The Chinese Area Positioning System (CAPS) is a regional satellite navigation system; its space segment consists of some Geostationary Earth Orbit (GEO) satellites and 2∼3 Inclined Geo-Synchronous Orbit (IGSO) satellites. Only a few satellites are needed to provide good area coverage and hence it is an ideal space segment for a regional navigation system. A time transfer mode is used to transmit navigation signals, so no high-precision atomic clocks are required onboard the satellites; all of the transferred navigation signals are generated by the same atomic clock at the master control statio

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18

Wu, Shiyu, Dongkai Yang, Yunlong Zhu, and Feng Wang. "Improved GNSS-Based Bistatic SAR Using Multi-Satellites Fusion: Analysis and Experimental Demonstration." Sensors 20, no. 24 (2020): 7119. http://dx.doi.org/10.3390/s20247119.

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The Global Navigation Satellite System (GNSS)-based Bistatic Synthetic Aperture Radar (SAR) is getting more and more attention in remote sensing for its all-weather and real-time global observation capability. Its low range resolution results from the narrow signal bandwidth limits in its development. The configuration difference caused by the illumination angle and movement direction of the different satellites makes it possible to improve resolution by multi-satellite fusion. However, this also introduces new problems with the resolution-enhancing efficiency and increased computation brought

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Zhang, Pengfei. "Research on satellite selection algorithm in ship positioning based on both geometry and geometric dilution of precision contribution." International Journal of Advanced Robotic Systems 16, no. 1 (2019): 172988141983024. http://dx.doi.org/10.1177/1729881419830246.

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With the networking of four Global Navigation Satellite Systems, the combination of multi-constellation applications has become an inevitable trend, and there will be more and more visible satellites that can be participated in ship positioning. However, the computational complexity increases sharply, which greatly improves the load capacity of the receiver’s data processor and reduces the output frequency of the positioning result. To achieve the balance between positioning accuracy and computational complexity, a new fast satellite selection algorithm based on both of geometry and geometric

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20

Nettleton, Greta S., and Emile G. McAnany. "Brazil's satellite system." Telecommunications Policy 13, no. 2 (1989): 159–66. http://dx.doi.org/10.1016/0308-5961(89)90040-2.

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21

Ильченко, Михаил Ефимович, Теодор Николаевич Нарытник, Владимир Ильич Присяжный, Сергей Владимирович Капштык та Сергей Анатольевич Матвиенко. "ИССЛЕДОВАНИЕ ПОДХОДОВ К ПОСТРОЕНИЮ ОРБИТАЛЬНОЙ ВЫЧИСЛИТЕЛЬНОЙ СЕТИ СПУТНИКОВОЙ СИСТЕМЫ ИНТЕРНЕТА ВЕЩЕЙ". Aerospace technic and technology, № 8 (31 серпня 2019): 138–51. http://dx.doi.org/10.32620/aktt.2019.8.21.

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There are considered issues of building a Low-Earth-Orbit Satellite System designed to provide the Internet of Things services and adapted to the features of the services and systems of the Internet of Things. The considered system provides the creation of the necessary telecommunication infrastructure based on the Low-Earth-Orbit Broadband Access Satellite System and places Computational Facilities into the Low-Earth-Orbit for to ensure the processing of Internet of Things devices and systems information, and perform computations. The architecture of a “Distributed Satellite” was chosen to co

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Chandrashekar, M. G., V. Jayaramn, C. B. S. Dutt, and B. Manikiam. "Earth Observation System Plans of India." International Astronomical Union Colloquium 123 (1990): 531. http://dx.doi.org/10.1017/s0252921100077617.

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AbstractOperational methodologies are available to retrieve several parameters related to the land, air and oceans from satellite data which is capable of providing well calibrated data/observations over large areas giving a synoptic view on a repetitive and reliable basis. The capability of satellites to provide data in various spectral, spatial and temporal scales is of great advantage in studying the dynamic aspects of earth atmosphere system. The present day capabilities of satellites include spatial resolutions ranging from 10 m and above and repetition of a few hours (geosynchronous Sate

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Zhang, Liangyi, Shaohua Wu, Xiyu Lv, and Jian Jiao. "A Two-Step Handover Strategy for GEO/LEO Heterogeneous Satellite Networks Based on Multi-Attribute Decision Making." Electronics 11, no. 5 (2022): 795. http://dx.doi.org/10.3390/electronics11050795.

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Low Earth Orbit (LEO) satellites can provide high-speed and low-delay services for terrestrial users; however, the rapid movement of LEO satellites and the insufficient size of the LEO constellations incurs the instability of the transmission links. The rapid movement of LEO satellites also leads to frequent handovers. Fortunately, GEO/LEO heterogeneous satellite systems can remedy this shortcoming. As the handover decision strategy which makes the selection among the available satellites will directly impact the performance of GEO/LEO heterogeneous satellite systems, we propose a two-step acc

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RAJA, M., and O. PRAKASH. "Design of High Pointing Accuracy NPSAT-1 Satellite Attitude Systems of Armature Controlled DC Motor with utilization for PD Controller." INCAS BULLETIN 12, no. 1 (2020): 145–56. http://dx.doi.org/10.13111/2066-8201.2020.12.1.14.

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An Attitude control system plays the important role to maintain the satellite to desired attitude orientations. The intended application of NANO satellite in low earth orbits (LEO) helps find transient responses with and without controllers. LEO satellites typically orbit at an altitude ranging between160-2000 km. LEO satellites are widely used for remote sensing, navigation, and military surveillance applications. The Nano NPSAT-1 satellite attitude control systems (ACS) are described in this research work. The high pointing accuracy attitude estimation and feedback control systems are presen

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Radhakrishnan, Radhika, Qing-An Zeng, and William E. Edmonson. "Inter-Satellite Communications for Small Satellite Systems." International Journal of Interdisciplinary Telecommunications and Networking 5, no. 3 (2013): 11–22. http://dx.doi.org/10.4018/jitn.2013070102.

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Small satellite technology has opened a new era in aerospace engineering by decreasing space mission costs, without greatly reducing the performance. The concept of formation flying using small satellites is becoming popular because of their potential to perform coordinated measurements of remote sensing space missions. The current state of art in satellite communications is a one hop link between satellite and ground station. Very little work has been done on inter-satellite communications. This paper aims to design and evaluate feasible MAC and routing layer protocols for distributed small s

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Li, Fangchao, Zengke Li, Jingxiang Gao, and Yifei Yao. "A Fast Rotating Partition Satellite Selection Algorithm Based on Equal Distribution of Sky." Journal of Navigation 72, no. 04 (2019): 1053–69. http://dx.doi.org/10.1017/s0373463318001145.

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To achieve fast satellite selection for a multi-Global Navigation Satellite System (GNSS), thereby reducing the burden on a receiver's processing element and the cost of hardware, and improving the utilisation ratio of receiver signal channels, the relationship between the number of satellites and Geometric Dilution Of Precision (GDOP), the number of satellites selected and the computation time is analysed. A fast rotating partition algorithm for satellite selection based on equal distribution of the sky is proposed. The algorithm divides the satellite selection process into two parts: rough s

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Channumsin, Sreesawet, Saroj, et al. "Development of Space Traffic Management System: ZIRCON." Proceedings 39, no. 1 (2020): 12. http://dx.doi.org/10.3390/proceedings2019039012.

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In near future, commercial companies have proposed to launch the extreme large constellation of small to medium-sized satellites over new 20,000 satellites in orbit. As a result, satellite operators will face a new challenge and have to prepare some solutions to mitigate huge potential collision risks. Under current practices, operators receive collision warning messages (Conjunction Data Messages: CDMs) generated by the Combined Space Operations Center (CSpOC). It is possibly to receive huge conjunctions that exceed warning threshold control each day but many of them are false conjunctions be

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He, Yongming, Yuan Wang, Yingwu Chen, and Lining Xing. "Auto Mission Planning System Design for Imaging Satellites and Its Applications in Environmental Field." Polish Maritime Research 23, s1 (2016): 59–70. http://dx.doi.org/10.1515/pomr-2016-0047.

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Abstract Satellite hardware has reached a level of development that enables imaging satellites to realize applications in the area of meteorology and environmental monitoring. As the requirements in terms of feasibility and the actual profit achieved by satellite applications increase, we need to comprehensively consider the actual status, constraints, unpredictable information, and complicated requirements. The management of this complex information and the allocation of satellite resources to realize image acquisition have become essential for enhancing the efficiency of satellite instrument

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SAKAI, Takeyasu. "Relocation of Satellites Adjacent to a Failed Satellite for the Quasi-Zenith Satellite System." JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 60, no. 6 (2012): 221–26. http://dx.doi.org/10.2322/jjsass.60.221.

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Ma, Chao, Jun Yang, Jianyun Chen, and Yinyin Tang. "Time synchronization requirement of global navigation satellite system augmentation system based on pseudolite." Measurement and Control 52, no. 3-4 (2019): 303–13. http://dx.doi.org/10.1177/0020294019827329.

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Global navigation satellite systems are widely used across the world because of their continuous/all-weather, global coverage, and high precision positioning. But, three-dimensional positioning accuracy, especially in the vertical direction, remains insufficient because of the geometric distribution of satellites. This is especially true for air-borne objects such as unmanned aerial vehicles, civil aviation devices, and missiles. To solve this problem, we adopt a satellite-ground joint positioning system based on a pseudo-satellite (pseudolite). The introduction of ground pseudolites can signi

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Soleymani, Ahmad, and Mehran Nosratollahi. "Simulation of thermal distribution system of microsatellite equipped with FMC actuators." Aircraft Engineering and Aerospace Technology 92, no. 10 (2020): 1505–12. http://dx.doi.org/10.1108/aeat-11-2019-0213.

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Purpose The purpose of this paper is to simulate the thermal performance of fluidic momentum controller (FMC) actuators in two case, with and without thermal distribution system on a three-axis configuration of FMC actuators to an orbital period of satellite. The results show the effectiveness of using a storage with FMC actuators. Design/methodology/approach One of the challenges during a satellite’s orbital mission is unpredictable external temperature perturbations. This system used as a collaborative thermal subsystem for microsatellite temperature passive control. The operating principles

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Pichugin, S. B. "Simplest Flow Queuing Models for LEO Satellite System." Proceedings of Higher Educational Institutions. Маchine Building, no. 1 (742) (January 2022): 61–70. http://dx.doi.org/10.18698/0536-1044-2022-1-61-70.

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The relevance of the work is associated with the active deployment of low-orbit communication systems and the expansion of research in the field of corresponding satellite systems. A promising low-orbit communication system based on relay satellites with the function (RSRFs) of routing message packets is considered. The low earth orbit communications systems use the BGP protocol and the AAA functionality at the ground station. For assessing the characteristics of RSRF inter-satellite paths, a scenario was created for the message packets arrival from a group of inter-satellite paths to one subs

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Shen, Fei, Mingming Sui, Yifan Zhu, Xinyun Cao, Yulong Ge, and Haohan Wei. "Using BDS MEO and IGSO Satellite SNR Observations to Measure Soil Moisture Fluctuations Based on the Satellite Repeat Period." Remote Sensing 13, no. 19 (2021): 3967. http://dx.doi.org/10.3390/rs13193967.

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Soil moisture is an important geophysical parameter for studying terrestrial water and energy cycles. It has been proven that Global Navigation Satellite System Interferometry Reflectometry (GNSS-IR) can be applied to monitor soil moisture. Unlike the Global Positioning System (GPS) that has only medium earth orbit (MEO) satellites, the Beidou Navigation Satellite System (BDS) also has geosynchronous earth orbit (GEO) satellites and inclined geosynchronous satellite orbit (IGSO) satellites. Benefiting from the distribution of three different orbits, the BDS has better coverage in Asia than oth

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Lee, Hak-Beom, Ki-Ho Kwon, and Jong-Hoon Won. "Feasibility Analysis of GPS L2C Signals for SSV Receivers on SBAS GEO Satellites." Remote Sensing 14, no. 21 (2022): 5329. http://dx.doi.org/10.3390/rs14215329.

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This paper analyzes the feasibility of Global Positioning System (GPS) L2C signals for use with the space service volume (SSV) receiver on satellite-based augmentation system (SBAS) geostationary orbit (GEO) satellites equipped with L1 and L5 band signal transmitters. Augmentation signals transmitted at L1 and L5 bands from SBAS GEO satellites may interfere with the same bands of SSV GPS-receiving antennas. Therefore, the use of L1 and L5 band signals for the GPS SSV receiver on SBAS GEO satellites is prohibited, and the GPS L2C signal is selected. Unlike ground systems, the various constraint

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Conti, G. T., and L. C. G. Souza. "Satellite Attitude Control System Simulator." Shock and Vibration 15, no. 3-4 (2008): 395–402. http://dx.doi.org/10.1155/2008/141465.

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Future space missions will involve satellites with great autonomy and stringent pointing precision, requiring of the Attitude Control Systems (ACS) with better performance than before, which is function of the control algorithms implemented on board computers. The difficulties for developing experimental ACS test is to obtain zero gravity and torque free conditions similar to the SCA operate in space. However, prototypes for control algorithms experimental verification are fundamental for space mission success. This paper presents the parameters estimation such as inertia matrix and position o

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Zou, Cheng, Haiwang Wang, Shiyi Xia, et al. "A Framework for Assessing the Interference from NGSO Satellite Systems to a Radio Astronomy System." Applied Sciences 13, no. 3 (2023): 1691. http://dx.doi.org/10.3390/app13031691.

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As the number of non-geostationary orbit (NGSO) satellites continues to grow, interference with other communication systems, including radio astronomy systems (RASs), is becoming increasingly critical. In this study, an interference simulation framework was developed to analyse the potential impact of NGSO systems on RAS in accordance with the relevant International Telecommunication Union (ITU) regulations and recommendations. In addition to the simulation of interference generated by individual NGSO satellite systems, the framework also supports the analysis of aggregate interference from mu

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Goldberg, M., G. Ohring, J. Butler, et al. "The Global Space-Based Inter-Calibration System." Bulletin of the American Meteorological Society 92, no. 4 (2011): 467–75. http://dx.doi.org/10.1175/2010bams2967.1.

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The Global Space-based Inter-Calibration System (GSICS) is a new international program to assure the comparability of satellite measurements taken at different times and locations by different instruments operated by different satellite agencies. Sponsored by the World Meteorological Organization and the Coordination Group for Meteorological Satellites, GSICS will intercalibrate the instruments of the international constellation of operational low-earth-orbiting (LEO) and geostationary earth-orbiting (GEO) environmental satellites and tie these to common reference standards. The intercomparabi

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Kammeyer, P. C., H. F. Fliegel, and R. S. Harrington. "Optical Astrometry and the Global Positioning System." International Astronomical Union Colloquium 127 (1991): 284–87. http://dx.doi.org/10.1017/s0252921100064009.

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AbstractAstrometric accuracies of a few tens of milliarcseconds are expected to be attainable within five years by calibrating astrograph plates with optical observations of Global Positioning System (GPS) satellites against a stellar background. The line of sight from an observer on the Earth’s surface to a GPS satellite may be calculated with high accuracy. Motion on each day of the line of sight to the satellite and changes from day to day in the apparent path of the satellite are sufficiently slow to make it possible to reduce atmospheric errors by averaging. Advanced ground-based optical

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Popov, Alexander M., Ilya Kostin, Julia Fadeeva, and Boris Andrievsky. "Development and Simulation of Motion Control System for Small Satellites Formation." Electronics 10, no. 24 (2021): 3111. http://dx.doi.org/10.3390/electronics10243111.

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In the paper, the problem of forming and maintaining the small satellites formation in the near-earth projected circular orbits is considered. The satellite formation reconfiguration and formation-keeping control laws are proposed by employing the passivity-based output feedback control. For the complete nonlinear and time-dependent dynamics of the relative motion of a pair of satellites in elliptical orbits, new combined control algorithms, including a consensus protocol, are proposed and analyzed. A comparison of the control modes using the passivity-based output feedback control and the pro

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Lord, Stephen, George Gayno, and Fanglin Yang. "Analysis of an Observing System Experiment for the Joint Polar Satellite System." Bulletin of the American Meteorological Society 97, no. 8 (2016): 1409–25. http://dx.doi.org/10.1175/bams-d-14-00207.1.

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Abstract The Joint Polar Satellite System (JPSS) is a key contributor to the next-generation operational polar-orbiting satellite observing system. In the JPSS era, the complete polar-orbiting observing system will be composed of two satellites—in the midmorning (mid-AM) and afternoon (PM) orbits—each with thermodynamic sounding capabilities from both microwave and hyperspectral infrared instruments. JPSS will occupy the PM orbit, while the Meteorological Operational (MetOp) system, sponsored by the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), will occupy

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Khomsin, Ira Mutiara Anjasmara, Danar Guruh Pratomo, and Wahyu Ristanto. "Accuracy Analysis of GNSS (GPS, GLONASS and BEIDOU) Obsevation For Positioning." E3S Web of Conferences 94 (2019): 01019. http://dx.doi.org/10.1051/e3sconf/20199401019.

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Global Navigation Satellite System called GNSS is a term used for the entire global navigation that already operate or are in the planning for the future. Some of the satellite that can be used are GPS (Global Positioning System) operated by USA, GLONASS (Global Navigation Satellite System) operated by Rusia and BeiDou/Compass operated by China. Many errors and biases that occur when measuring with GNSS in the field. Theoritically, there are some errors and biases that can be eliminated or subtracted by strength of satellite geometric. One factor to get a good satellite geometric is to increas

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Zhou, Li. "Optical System in Laser Inter-Satellites Communication." Advanced Materials Research 945-949 (June 2014): 2213–16. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2213.

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We know that Inter-satellites communica-tion is a very important to us.However, real global coverage can only be achieved by satellite systems. Satellites communication is the most important mean of the communication network. The traditional satellites communication and inter-satellites links are built by microwave. Recent years, laser links for inter-satellites communication are becoming more and more important.

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Hidri, Lotfi, Mehdi Mrad, and Mohammed Alkahtani. "Suitable Mass Density Function for an Artificial Satellite to Prevent Chaotic Motion after Collision with Space Debris." Symmetry 14, no. 4 (2022): 818. http://dx.doi.org/10.3390/sym14040818.

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Artificial satellites are widely used in different areas such as communication, position systems, and agriculture. The number of satellites orbiting Earth is becoming huge, and many are set to be launched soon. This huge number of satellites in addition to space debris are sources of concern. Indeed, some incidents have occurred either between satellites or because of space debris. These incidents are a threat for the hit satellite and can be a source of irreversible damages. A hit satellite may diverge to a chaotic motion with all the entailed consequences. The inertia moment of a satellite i

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Zong, Zhu Lin, Jian Hao Hu, and Li Dong Zhu. "Estimation of Doppler Parameter for Formation-Flying Satellite SAR System." Applied Mechanics and Materials 44-47 (December 2010): 3473–77. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.3473.

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In formation-flying satellite SAR system, especially the satellites are LEO or MEO, Doppler frequency shift of SAR echo has a character of long-range changes and quick time variation. Because of this, imaging with high quality become difficulty. Based on the theories and methods of universal gravitation, the relative positions and velocities between every satellite and the ground detection center can be computed, then the Doppler frequency shift for formation-flying satellite SAR system can be estimated that only need to known the parameters of satellite orbit, the working frequency and the az

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Bhardwaj, Ashutosh. "Terrestrial and Satellite-Based Positioning and Navigation Systems—A Review with a Regional and Global Perspective." Engineering Proceedings 2, no. 1 (2020): 41. http://dx.doi.org/10.3390/ecsa-7-08262.

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Satellite-based navigation techniques have revolutionized modern-day surveying with unprecedented accuracies along with the traditional and terrestrial-based navigation techniques. However, the satellite-based techniques gain popularity due to their ease and availability. The position and attitude sensors mounted on satellites, aerial, and ground-based platforms as well as different types of equipment play a vital role in remote sensing providing navigation and data. The presented review in this paper describes the terrestrial (LORAN-C, Omega, Alpha, Chayka) and satellite-based systems with th

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Zhang, Lei, and Bo Xu. "Navigation Performance of the Libration Point Satellite Navigation System in Cislunar Space." Journal of Navigation 68, no. 2 (2014): 367–82. http://dx.doi.org/10.1017/s0373463314000617.

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Based on the candidate architectures of the libration point satellite navigation system proposed in our previous work, a navigation performance study is conducted in this paper to verify the cislunar navigation ability of the proposed system. Using scalar satellite-to-satellite range measurement between the user and libration point navigation satellites, a virtual lunar exploration mission scenario is developed to verify the navigation performance of the candidate Earth-Moon L1,2,4,5 four-satellite constellations. The simulation results indicate that the libration point satellite navigation sy

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Gu, Neng Hua, and Ting You. "Improvement of Passive Location Precision Using ‘Beidou’ Navigation System." Advanced Materials Research 383-390 (November 2011): 7099–103. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7099.

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This article raises an improved program of adding Pseudo-Satellite’s pseudo-range measurement and setting best configuration for Pseudo-Satellite in mentioned program on the basis of existing Binary System [1]. Through comparison and analysis of improved Tri-satellite System and existing Binary System, this article proves that it shortens location time and location precision by adding Pseudo-Satellite to Binary Navigation Location System. Finally this conclusion is approved by simulating Mathematical model using software.

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Meng, Fan Qin, Xu Hai Yang, Ji Kun Ou, and Pei Wei. "Method of Determining Satellite Clock Error by Using Observation Data of Satellite-Ground and Inter-Satellite." Advanced Materials Research 718-720 (July 2013): 474–79. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.474.

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We have done some simulate analysis on GPS data in this paper. The main research is method of determining satellite clock error by usining observation data of satellite-ground and inter-satellite under the condition of regional station arrangement. The research method is as follows: when the satellite in the visible area of regional observation network, we can get satellite clock error directly by satellite-ground time comparison, and predict the satellite clock error in invisible area. When the satellite in the invisible area of regional observation network, if this satellite can establish in

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Fischer, Christian, Winfried Halle, Thomas Säuberlich, et al. "Small Satellite Tools for High-Resolution Infrared Fire Monitoring." Journal of Imaging 8, no. 2 (2022): 49. http://dx.doi.org/10.3390/jimaging8020049.

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Space-borne infrared remote sensing specifically for the detection and characterization of fires has a long history in the DLR Institute of Optical Sensor Systems. In the year 2001, the first DLR experimental satellite, Bi-spectral Infrared Detection (BIRD), was launched after an intensive test period with cooled IR sensor systems on airborne systems. The main basis for the development of the FireBIRD mission with the two satellites, Technology Erprobungsträger No 1 (TET-1) and Bi-spectral-Infrared Optical System (BIROS), was the already space-proven sensor and satellite technology with succes

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Liu, Chan, Liping Chen, Jianwan Ding, and Duansen Shangguan. "Modeling of Satellite Constellation in Modelica and a PHM System Framework Driven by Model Data Hybrid." Electronics 11, no. 14 (2022): 2155. http://dx.doi.org/10.3390/electronics11142155.

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The new generation of low-earth-orbit (LEO) satellite constellation systems has the characteristics of low delay, strong signal and global coverage, and it is an important direction for the development of next-generation communication technology. A major disadvantage is that the constellation system is huge, often composed of hundreds or thousands of satellites, which puts forward high requirements for the design and health management of the constellation system, and the existing telemetry data monitoring system cannot meet the actual needs. CPS is a multidimensional complex system that integr

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