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Articles de revues sur le sujet « Estimation par horizon mobile »

Auteur : Grafiati

Publié le 22 février 2024

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1

Wang, Xuezhi, Branko Ristic, Braham Himed, and Bill Moran. "Trajectory Optimisation for Cooperative Target Tracking with Passive Mobile Sensors." Signals 2, no. 2 (2021): 174–88. http://dx.doi.org/10.3390/signals2020014.

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The paper considers the problem of tracking a moving target using a pair of cooperative bearing-only mobile sensors. Sensor trajectory optimisation plays the central role in this problem, with the objective to minimize the estimation error of the target state. Two approximate closed-form statistical reward functions, referred to as the Expected Rényi information divergence (RID) and the Determinant of the Fisher Information Matrix (FIM), are analysed and discussed in the paper. Being available analytically, the two reward functions are fast to compute and therefore potentially useful for longe

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Liu, Andong, Wen-An Zhang, Michael Z. Q. Chen, and Li Yu. "Moving Horizon Estimation for Mobile Robots With Multirate Sampling." IEEE Transactions on Industrial Electronics 64, no. 2 (2017): 1457–67. http://dx.doi.org/10.1109/tie.2016.2611458.

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Grishin, Vladimir A., and Igor A. Maslov. "Horizon Line Stability Observations over the Sea." Journal of Navigation 71, no. 2 (2017): 437–53. http://dx.doi.org/10.1017/s0373463317000650.

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Increasing the stability and reliability of navigation for mobile objects of different classes is becoming increasingly significant. Satellite navigation systems have a fundamental defect: a vulnerability to hacking and spoofing. Observation of the horizon line is significant for two applications. The first is stellar inertial navigation systems. In this case, the horizon line can be used for local vertical estimation. Errors in local vertical estimation directly affect coordinate errors. The second is correlation-extremal navigation based on the observed horizon line shape (when islands or co

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Yang, Kai, Zhensen Wu, Xing Guo, et al. "Estimation of co-channel interference between cities caused by ducting and turbulence." Chinese Physics B 31, no. 2 (2021): 024102. http://dx.doi.org/10.1088/1674-1056/ac339c.

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With the rapid development of the fifth-generation (5G) mobile communication technology, the application of each frequency band has reached the extreme, causing mutual interference between different modules. Hence, there is a requirement for detecting filtering and preventing interference. In the troposphere, over-the-horizon propagation occurs in atmospheric ducts and turbulent media. The effects of both ducting and turbulence can increase the probability of occurrence of long-distance co-channel interference (CCI), in turn, severely affecting the key performance indicators such as system acc

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SAKAETA, Kuniyuki, Kazuki KIMURA, Kenichiro NONAKA, and Kazuma SEKIGUCHI. "Mobile Robot Localization Integrating LRF Map-matching and Odometry Based on Moving Horizon Estimation Considering Singular Environments." Transactions of the Society of Instrument and Control Engineers 53, no. 6 (2017): 355–65. http://dx.doi.org/10.9746/sicetr.53.355.

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Chudá, J., M. Hunčaga, J. Tuček, and M. Mokroš. "THE HANDHELD MOBILE LASER SCANNERS AS A TOOL FOR ACCURATE POSITIONING UNDER FOREST CANOPY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B1-2020 (August 6, 2020): 211–18. http://dx.doi.org/10.5194/isprs-archives-xliii-b1-2020-211-2020.

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Abstract. Nowadays it is important to shift positional accuracy of object measurements under the forest canopy closer to the accuracy standards for land surveys due to the requirements in the field of ecosystem protection, sustainable forest management, property relations, and land register. Simultaneously, it is desirable to use the technology of environmental data acquisition which is not time consuming and cost demanding. Global Navigation Satellite Systems (GNSS) are the most used for positioning today. However, the usefulness and also the accuracy of the measurements with this technology

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Souare, Mory. "Estimation suroptimale de la densité spectrale par projection adaptative : Application à l'estimation de l'ordre d'une moyenne mobile." Comptes Rendus Mathematique 346, no. 17-18 (2008): 999–1002. http://dx.doi.org/10.1016/j.crma.2008.07.019.

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Chudá, Juliána, Jozef Výbošťok, Julián Tomaštík, et al. "Prompt Mapping Tree Positions with Handheld Mobile Scanners Based on SLAM Technology." Land 13, no. 1 (2024): 93. http://dx.doi.org/10.3390/land13010093.

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In this study, we evaluated the performance of GeoSLAM ZEB Horizon and Stonex X120GO SLAM handheld mobile laser scanners (HMLS) to address two primary objectives. First, we aimed to assess and compare the accuracy of positioning achieved using HMLS instruments. Second, we sought to investigate the influencing factors and their impact on estimation accuracies. The factors influencing the accuracy of positioning in HMLS Simultaneous Localization and Mapping-aided solutions were defined, considering the scanner type, distance from the trajectory, forest structure, tree species, and Diameter at Br

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Park, Gwangsoo, Byungjin Lee, and Sangkyung Sung. "Integrated Pose Estimation Using 2D Lidar and INS Based on Hybrid Scan Matching." Sensors 21, no. 16 (2021): 5670. http://dx.doi.org/10.3390/s21165670.

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Point cloud data is essential measurement information that has facilitated an extended functionality horizon for urban mobility. While 3D lidar and image-depth sensors are superior in implementing mapping and localization, sense and avoidance, and cognitive exploration in an unknown area, applying 2D lidar is inevitable for systems with limited resources of weight and computational power, for instance, in an aerial mobility system. In this paper, we propose a new pose estimation scheme that reflects the characteristics of extracted feature point information from 2D lidar on the NDT framework f

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Bouchafa, Samia. "Décision cumulative pour la vision dynamique des systèmes." Revue Française de Photogrammétrie et de Télédétection, no. 202 (April 16, 2014): 2–26. http://dx.doi.org/10.52638/rfpt.2013.48.

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Les travaux présentés dans cette synthèse portent essentiellement sur l'analyse de scènes à partir de caméras mobiles avec pour application immédiate l'apport d'une vision par ordinateur efficace dans les systèmes autonomes. Ils sont le fruit d'une décennie de recherches menées d'abord à l'INRETS (actuellement IFSTTAR : Institut français des sciences et technologies des transports, de l'aménagement et des réseaux ) puis à l'Université Paris Sud XI (Institut d'Électronique Fondamentale). L'idée initiale est que l'autonomie d'un système implique, ne serait-ce que pour raisons énergétiques, une f

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Walczak, Amadeusz, Mateusz Lipiński, and Grzegorz Janik. "Application of the TDR Sensor and the Parameters of Injection Irrigation for the Estimation of Soil Evaporation Intensity." Sensors 21, no. 7 (2021): 2309. http://dx.doi.org/10.3390/s21072309.

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The objective of the study was to develop a precise method of determination of the evaporation rate in a soil irrigated with the use of a mobile injection irrigation system. Two methods of constructing functions approximating the value of evaporation have been developed. In the first method, the domain comprises the parameters of injection irrigation, i.e., the dose and the depth of injection, and in the second, the volumetric moisture of soil in the layer immediately below the soil surface, which was measured with time-domain reflectometry (TDR) sensors. For that purpose, a laboratory experim

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Mordachev, V. I., and D. A. Tsyanenka. "Influence of Spatial Selectivity of Radiation of Mobile Communication Base Stations on the Level of Electromagnetic Background Introduced by them." Doklady BGUIR 20, no. 7 (2022): 56–64. http://dx.doi.org/10.35596/1729-7648-2022-20-7-56-64.

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Radio frequency electromagnetic radiation from base stations is the main source of electromagnetic background generated by mobile (cellular) communication systems in residential areas; its intensity makes a significant contribution to the level of electromagnetic pollution of the habitat and determines the level of electromagnetic safety of the population. The previously proposed technique for estimating the average intensity of this background, based on the analysis of the territorial intensity of mobile traffic, takes into account the spatial selectivity of base station radiation in a simpli

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Birur Viswanath, Shruti, Thippeswamy Muddenahalli Nagendrappa, and Krishna Rao Venkatesh. "JSMCRP: Cross-Layer Architecture based Joint-Synchronous MAC and Routing Protocol for Wireless Sensor Network." ECTI Transactions on Electrical Engineering, Electronics, and Communications 19, no. 1 (2021): 94–113. http://dx.doi.org/10.37936/ecti-eec.2021191.240719.

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The exponential rise in wireless technologies and allied applications has revitalized academia-industries to develop more efficient and economic routing solution to meet Quality-of-Service (QoS) provision. Amongst the major wireless communication systems, Wireless Sensor Network (WSN) is the most sought technology for defense surveillance, healthcare monitoring, industrial monitoring and control, civic and strategic infrastructure surveillance etc. Additionally, the up surge in Internet of Things (IoT) and Machine to Machine (M2M) communication systems too have broadened the horizon for WSNs b

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Hyyppä, Eric, Xiaowei Yu, Harri Kaartinen, et al. "Comparison of Backpack, Handheld, Under-Canopy UAV, and Above-Canopy UAV Laser Scanning for Field Reference Data Collection in Boreal Forests." Remote Sensing 12, no. 20 (2020): 3327. http://dx.doi.org/10.3390/rs12203327.

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In this work, we compared six emerging mobile laser scanning (MLS) technologies for field reference data collection at the individual tree level in boreal forest conditions. The systems under study were an in-house developed AKHKA-R3 backpack laser scanner, a handheld Zeb-Horizon laser scanner, an under-canopy UAV (Unmanned Aircraft Vehicle) laser scanning system, and three above-canopy UAV laser scanning systems providing point clouds with varying point densities. To assess the performance of the methods for automated measurements of diameter at breast height (DBH), stem curve, tree height an

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Osman, Mostafa, Mohamed W. Mehrez, Mohamed A. Daoud, Ahmed Hussein, Soo Jeon, and William Melek. "A generic multi-sensor fusion scheme for localization of autonomous platforms using moving horizon estimation." Transactions of the Institute of Measurement and Control, June 30, 2021, 014233122110114. http://dx.doi.org/10.1177/01423312211011454.

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In this paper, a generic multi-sensor fusion framework is developed for the localization of intelligent vehicles and mobile robots. The localization framework is based on moving horizon estimation (MHE). Unlike the commonly used probabilistic filtering algorithms – for example, extended Kalman filter (EKF) and unscented Kalman filter (UKF) – MHE relies on solving successive least squares optimization problems over the innovation of multiple sensors’ measurements and a specific estimation horizon. In this paper, we present an efficient and generic multi-sensor fusion scheme, based on MHE. The p

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BAJE, SYED IBRAHIM, B. JYOTHI, and N. MADHAVI. "RP-HPLC METHOD FOR SIMULTANEOUS ESTIMATION OF RITONAVIR, OMBITASVIR AND PARITAPREVIR IN TABLET DOSAGE FORMS AND THEIR STRESS DEGRADATION STUDIES." International Journal of Applied Pharmaceutics, January 30, 2019, 193–210. http://dx.doi.org/10.22159/ijap.2019v11i2.28141.

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Objective: The objective of the present study was to develop and validate a novel reverse phase high performance liquid chromatographic (RP-HPLC) method, for simultaneous determination of ritonavir (RIT), ombitasvir (OMB) and paritaprevir (PAR) in bulk mixtures, and in tablets. Methods: Determination of the drugs ritonavir (RIT), ombitasvir (OMB), and paritaprevir (PAR), was carried out applying Hypersil BDS C18 column (250 mm X 4.6 mm i.e., 5 µm particle size), with photodiode array detector at λmax of 254 nm. The mobile phase applied for the current study composed of two solvents, i.e.

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Guiro, Aboudramane, Abderrahman Iggidr, and Diène Ngom. "Interval numerical observer: Application to a discrete time nonlinear fish model." Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 11, 2009 - Special... (August 11, 2008). http://dx.doi.org/10.46298/arima.1923.

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International audience The aim of this work is to reconstitute the state of a discrete-time nonlinear system representing a dynamical model of a harvested fish population. For this end, we are going to use a numerical method of building an interval observer for the consider discrete-time model fish population. We adapt to this model an algorithm called "Interval Moving Horizon State Estimation" (IMHSE) which gives an estimated interval of the system states. This algorithm is carried out in [8] and work well for a general class of discrete-time systems. Le but de ce travail est de reconstruire

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Baxevani, Kleio, Indrajeet Yadav, Yulin Yang, Michael Sebok, Herbert G. Tanner, and Guoquan Huang. "Resilient Ground Vehicle Autonomous Navigation in GPS-denied Environments." Guidance, Navigation and Control, November 23, 2022. http://dx.doi.org/10.1142/s2737480722500200.

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Co-design and integration of vehicle navigation and control and state estimation is key for enabling field deployment of mobile robots in GPS-denied cluttered environments, and sensor calibration is critical for successful operation of both subsystems. This paper demonstrates the potential of this co-design approach with field tests of the integration of a reactive receding horizon-based motion planner and controller with an inertial aided multi-sensor calibration scheme. The reported method provides accurate calibration parameters that improve the performance of the state estimator, and enabl

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Zhang, Xin, Alireza Pourreza, Kyle H. Cheung, German Zuniga-Ramirez, Bruce D. Lampinen, and Kenneth A. Shackel. "Estimation of Fractional Photosynthetically Active Radiation From a Canopy 3D Model; Case Study: Almond Yield Prediction." Frontiers in Plant Science 12 (August 26, 2021). http://dx.doi.org/10.3389/fpls.2021.715361.

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Canopy-intercepted light, or photosynthetically active radiation, is fundamentally crucial for quantifying crop biomass development and yield potential. Fractional photosynthetically active radiation (PAR) (fPAR) is conventionally obtained by measuring the PAR both below and above the canopy using a mobile lightbar platform to predict the potential yield of nut crops. This study proposed a feasible and low-cost method for accurately estimating the canopy fPAR using aerial photogrammetry-based canopy three-dimensional models. We tested up to eight different varieties in three experimental almon

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Alban, Andres, Philippe Blaettchen, Harwin de Vries, and Luk N. Van Wassenhove. "Resource Allocation with Sigmoidal Demands: Mobile Healthcare Units and Service Adoption." Manufacturing & Service Operations Management, October 28, 2021. http://dx.doi.org/10.1287/msom.2021.1020.

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Problem definition: Achieving broad access to health services (a target within the sustainable development goals) requires reaching rural populations. Mobile healthcare units (MHUs) visit remote sites to offer health services to these populations. However, limited exposure, health literacy, and trust can lead to sigmoidal (S-shaped) adoption dynamics, presenting a difficult obstacle in allocating limited MHU resources. It is tempting to allocate resources in line with current demand, as seen in practice. However, to maximize access in the long term, this may be far from optimal, and insights i

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Giraldo, Diego Garcia, and Ronald W. Yeung. "The 2010 Oil Spill in the Gulf of Mexico: Flow-Rate Estimation Based on Satellite-Images Analysis1." Journal of Offshore Mechanics and Arctic Engineering 141, no. 5 (2019). http://dx.doi.org/10.1115/1.4041770.

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Abstract The Deepwater Horizon Mobile Offshore Drilling Unit (MODU) was one of several classes of floatable drilling systems. The explosion on April 20, 2010 led to fatalities and the worst oil spill in the U.S. We present an independent estimate of the oil-flow rate into The Gulf caused by the drill-pipe rupture. We employed the NASA Moderate-Resolution Imaging-Spectroradiometer (MODIS) satellite photographs, starting from the days immediately following the disaster, to determine the magnitude of spill. From these images, we obtained the surface area of the spill and calculated the oil flow r

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-, Suvas M. Vora, Trunal K. Patel -, and Dharmesh K. Patel -. "Smart-ups Battery Charging System Utilizing GSM Technology for Accurate Battery Backup Estimation." International Journal For Multidisciplinary Research 6, no. 1 (2024). http://dx.doi.org/10.36948/ijfmr.2024.v06i01.12232.

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UPS, which stands for Uninterruptible Power Supply, is a supply system that acts as a bridge between the electric grid and the consumer. It consists of electric hardware components and batteries. The prima-ry purpose of UPS is to provide emergency power supply to critical locations such as hospitals, computer networks, communication systems, and industrial processes. In the current market, there are various types of UPS available, but some essential features are still miss-ing. To address this, we are working on developing a smart UPS system that includes battery backup es-timation based on lo

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Ozer-Stillman, Ipek, John D. Whalen, Lori D. Bash, et al. "Abstract 372: Health Outcomes Associated With Triple Antiplatelet Therapy for the Secondary Prevention of Atherothrombotic Events." Circulation: Cardiovascular Quality and Outcomes 8, suppl_2 (2015). http://dx.doi.org/10.1161/circoutcomes.8.suppl_2.372.

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Vorapaxar is a protease-activated receptor-1 (PAR-1) antagonist indicated for the reduction of atherothrombotic cardiovascular (CV) events in patients with a history of myocardial infarction (MI) or with peripheral arterial disease (PAD), based on the findings of the TRA 2°P-TIMI 50 trial for patients without a history of stroke or transient ischemic attack. This analysis evaluated the health outcomes of triple antiplatelet therapy with vorapaxar when added to a standard care regimen of clopidogrel plus aspirin (ASA) in comparison with standard care alone, for patients without a history of tra

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Broeckmann, Andreas. "Minor Media - Heterogenic Machines." M/C Journal 2, no. 6 (1999). http://dx.doi.org/10.5204/mcj.1788.

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1. A Minor Philosopher According to Guattari and Deleuze's definition, a 'minor literature' is the literature of a minority that makes use of a major language, a literature which deterritorialises that language and interconnects meanings of the most disparate levels, inseparably mixing and implicating poetic, psychological, social and political issues with each other. In analogy, the Japanese media theorist Toshiya Ueno has refered to Félix Guattari as a 'minor philosopher'. Himself a practicing psychoanalyst, Guattari was a foreigner to the Grand Nation of Philosophy, whose natives mostly tre

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