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Journal articles on the topic 'Code positioning'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Pettis, Karl, Robert C. Hansen, and Jack W. Davidson. "Profile guided code positioning." ACM SIGPLAN Notices 39, no. 4 (2004): 398–411. http://dx.doi.org/10.1145/989393.989433.

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2

Pettis, Karl, and Robert C. Hansen. "Profile guided code positioning." ACM SIGPLAN Notices 25, no. 6 (1990): 16–27. http://dx.doi.org/10.1145/93548.93550.

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3

Tian, Ming Ming, and Zong Jiu Zhu. "The Method of the Global Positioning Based on RSSI." Applied Mechanics and Materials 198-199 (September 2012): 1438–41. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1438.

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A novel Global Positioning Algorithm for Workers in Underground Coal Mine Based on RSSI (Received Signal Strength Indication) is proposed and implemented. The innovation of the algorithm is the RSSI optimization and GIS auxiliary positioning. The RSSI optimization can reduces the error caused when the blind code is too closed to the reference node, and GIS auxiliary positioning is to solve the problem that the number of the reference codes in the communication radius of blind code is less than three. Experimental Results Indicate that Global positioning algorithm has the average vertical posit

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Segal, Eran, Yvonne Fondufe-Mittendorf, Lingyi Chen, et al. "A genomic code for nucleosome positioning." Nature 442, no. 7104 (2006): 772–78. http://dx.doi.org/10.1038/nature04979.

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Widom, Jonathan. "The Genomic Code for Nucleosome Positioning." Biophysical Journal 98, no. 3 (2010): 608a. http://dx.doi.org/10.1016/j.bpj.2009.12.3313.

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Wang, Xinyue, and Haibao Wang. "The QR code intelligent positioning system of the LBS cloud platform in the Internet of things environment." Journal of Autonomous Intelligence 3, no. 2 (2021): 31. http://dx.doi.org/10.32629/jai.v3i2.338.

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Aiming at the problems of long positioning time and poor positioning accuracy in traditional positioning systems, a WeChat applet QR code area positioning system based on the LBS cloud platform is proposed and designed. The overall architecture of the system is divided into three parts: LBS cloud service, central data processing, and QR code positioning terminal for small programs. The hardware is designed from the server-side module, processor and positioning module to provide a basis for system construction. In the software design, the WeChat applet QR code area image is collected, the image

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Bahadur, Berkay. "Real-time single-frequency precise positioning with Galileo satellites." Journal of Navigation 75, no. 1 (2021): 124–40. http://dx.doi.org/10.1017/s037346332100076x.

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AbstractFollowing substantial progress achieved recently, the Galileo constellation provides a considerable satellite resource for the GNSS applications. In this regard, the performance assessment of real-time single-frequency precise positioning with Galileo satellites is the main objective of this research. For this purpose, several experimental tests were conducted in this study with two single-frequency positioning models, namely single-frequency code-based positioning and code-phase combination. The results show that Galileo presents an adequate number of visible satellites sufficient for

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Przestrzelski, Paweł, and Mieczysław Bakuła. "Study Of Differential Code GPS/GLONASS Positioning." Annual of Navigation 21, no. 1 (2014): 117–32. http://dx.doi.org/10.1515/aon-2015-0010.

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AbstractThis paper presents the essential issues and problems associated with GNSS (Global Navigation Satellite System) code differential positioning simultaneously using observations from at least two independent satellite navigation systems. To this end, two satellite navigation systems were selected: GPS (Global Positioning System, USA) and GLONASS (GLObalnaya NAvigatsionnaya Sputnikovaya Sistema, Russia). The major limitations and methods of their elimination are described, as well as the basic advantages and benefits resulting from the application of the DGNSS (Differential GNSS) position

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Ao, Zhen, Feng Li, Qiang Ma, and Guiqing He. "Voice and Position Simultaneous Communication System Based on Beidou Navigation Constellation." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 38, no. 5 (2020): 1010–17. http://dx.doi.org/10.1051/jnwpu/20203851010.

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Considering China Beidou has unique two-way communication capability for short messages that are not available in other navigation systems such as GPS, a 600bps vocoder adapted to the short message channel of Beidou is developed. The sinusoidal excitation linear prediction algorithm is adopted by the vocoder to achieve voice communication with clear communication quality. Furthermore, a coordinate compression algorithm for processing positioning information is designed to provide more transmission space for speech encoded data. Based on the above-mentioned results, a communication system that

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Li, Haojun, Jingxin Xiao, and Bofeng Li. "Evaluation and Application of the GPS Code Observable in Precise Point Positioning." Journal of Navigation 72, no. 06 (2019): 1633–48. http://dx.doi.org/10.1017/s0373463319000274.

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The accuracy of the Global Positioning System (GPS) observable, especially for the code observable, has improved with the development of Global Navigation Satellite System (GNSS) receiver technology. An evaluation of the GPS code observable is presented in this paper, together with a stochastic model for the code and phase observables in Precise Point Positioning (PPP), established using the evaluated results. The results show that the code observables of Leica GNSS receivers are generally better than those of some other brand receivers and the Root Mean Square (RMS) for the code observables o

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Zhang, Bowen, Shiyun Li, Junting Qiu, Gang You, and Lishuang Qu. "Application and Research on Improved Adaptive Monte Carlo Localization Algorithm for Automatic Guided Vehicle Fusion with QR Code Navigation." Applied Sciences 13, no. 21 (2023): 11913. http://dx.doi.org/10.3390/app132111913.

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SLAM (simultaneous localization and mapping) technology incorporating QR code navigation has been widely used in the mobile robotics industry. However, the particle kidnapping problem, positioning accuracy, and navigation time are still urgent issues to be solved. In this paper, a SLAM fused QR code navigation method is proposed and an improved adaptive Monte Carlo positioning algorithm is used to fuse the QR code information. Firstly, the generation and resampling methods of initialized particle swarms are improved to improve the robustness and weights of the swarms and to avoid the kidnappin

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Krasuski, Kamil, Janusz Cwiklak, and Marek Grzegorzewski. "Aircraft positioning using GPS/GLONASS code observations." Aircraft Engineering and Aerospace Technology 92, no. 2 (2019): 163–71. http://dx.doi.org/10.1108/aeat-01-2019-0018.

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Purpose This paper aims to present the problem of the integration of the global positioning system (GPS)/global navigation satellite system (GLONASS) data for the processing of aircraft position determination. Design/methodology/approach The aircraft coordinates were obtained based on GPS and GLONASS code observations for the single point positioning (SPP) method. The numerical computations were executed in the aircraft positioning software (APS) package. The mathematical scheme of equation observation of the SPP method was solved using least square estimation in stochastic processing. In the

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Shang, Rui, Chengfa Gao, Shuguo Pan, Xiaolin Meng, and Wang Gao. "Tightly combined GPS + GLONASS positioning with consideration of inter-system code bias and GLONASS inter-frequency code bias." Journal of Navigation 73, no. 2 (2019): 296–311. http://dx.doi.org/10.1017/s0373463319000596.

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Inter-system code double differencing is an effective method for improving the positioning accuracy of low-cost receivers in complex environments. Due to the adoption of Frequency Division Multiple Access (FDMA), Globalnaya Navigazionnaya Sputnikovaya Sistema (GLONASS) code observations are affected by the Inter-Frequency Code Biases (IFCBs), which makes it difficult to calculate the Differential Inter-System Code Biases (DISCBs) between GLONASS and the Code Division Multiple Access (CDMA) systems directly. In this contribution, the focus is on the performance of tightly combined Global Positi

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Ma, Zeyu, Jianhui Cui, Zhimin Liu, et al. "Influence of Inter-System Biases on Combined Single-Frequency BDS-2 and BDS-3 Pseudorange Positioning of Different Types of Receivers." Remote Sensing 16, no. 10 (2024): 1710. http://dx.doi.org/10.3390/rs16101710.

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The BeiDou Navigation Satellite System (BDS) has developed rapidly, and the combination of BDS Phase II (BDS-2) and BDS Phase III (BDS-3) has attracted wide attention. It is found that there are code ISBs between BDS-2 and BDS-3, which may have a certain impact on the BDS-2 and BDS-3 combined positioning. This paper focuses on the performance of BDS-2/BDS-3 combined B1I single-frequency pseudorange positioning and investigates the positioning performance with and without code ISBs correction for different types of receivers, include geodetic GNSS receivers and low-cost receivers. The results s

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Prochniewicz, Dominik, and Maciej Grzymala. "Analysis of the Impact of Multipath on Galileo System Measurements." Remote Sensing 13, no. 12 (2021): 2295. http://dx.doi.org/10.3390/rs13122295.

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Multipath is one of the major source of errors in precise Global Navigation Satellite System positioning. With the emergence of new navigation systems, such as Galileo, upgraded signals are progressively being used and are expected to provide greater resistance to the effects of multipath compared to legacy Global Positioning System (GPS) signals. The high quality of Galileo observations along with recent development of the Galileo space segment can therefore offer significant advantages to Galileo users in terms of the accuracy and reliability of positioning. The aim of this paper is to verif

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Elhajj, Mireille, and Washington Ochieng. "Impact of New GPS Signals on Positioning Accuracy for Urban Bus Operations." Journal of Navigation 73, no. 6 (2020): 1284–305. http://dx.doi.org/10.1017/s0373463320000272.

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This paper analyses for the first time the impact of new GPS signals on positioning accuracy for dynamic urban applications, taking bus operations as an example. The performance assessment addresses both code measurement precision and positioning accuracy. The former is based on signal-to-noise ratio and estimation of multipath and noise by a combination of code and carrier phase measurements. The impact on positioning accuracy is derived by comparing the performance achievable with the conventional single frequency GPS only positioning both relative to reference trajectories from the integrat

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Luo, Yiran, Li-Ta Hsu, Yang Jiang, et al. "High-Accuracy Absolute-Position-Aided Code Phase Tracking Based on RTK/INS Deep Integration in Challenging Static Scenarios." Remote Sensing 15, no. 4 (2023): 1114. http://dx.doi.org/10.3390/rs15041114.

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Many multi-sensor navigation systems urgently demand accurate positioning initialization from global navigation satellite systems (GNSSs) in challenging static scenarios. However, ground blockages against line-of-sight (LOS) signal reception make it difficult for GNSS users. Steering local codes in GNSS basebands is a desirable way to correct instantaneous signal phase misalignment, efficiently gathering useful signal power and increasing positioning accuracy. Inertial navigation systems (INSs) have been used as effective complementary dead reckoning (DR) sensors for GNSS receivers in kinemati

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Liu, R. K., and D. J. Zhang. "INDOOR POSITIONING AND NAVIGATION BASED ON QR CODE MAP." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-1/W2-2023 (December 13, 2023): 665–70. http://dx.doi.org/10.5194/isprs-archives-xlviii-1-w2-2023-665-2023.

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Abstract. Solving the indoor positioning problem can effectively improve work and life efficiency. Outdoors, navigation and positioning mainly rely on satellites to provide global positioning and road network topology to constrain the direction of travel. Therefore, to achieve good indoor navigation and positioning, two things are needed: 1) continuous position acquisition and 2) an indoor road network. Since the indoor environment is relatively stable, the geodetic coordinates of key indoor nodes can be obtained in advance through measurement methods and control points can be set up. Inertial

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Bakuła, Mieczysław, Marcin Uradziński, and Kamil Krasuski. "Network Code DGNSS Positioning for Faster L1–L5 GPS Ambiguity Initialization." Sensors 20, no. 19 (2020): 5671. http://dx.doi.org/10.3390/s20195671.

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This paper presents DGNSS network code positioning using permanent geodetic networks, commonly used in GNSS measurements. Using several reference stations at the same time allows for the independent control of GNSS positioning and facilitates the more realistic estimation of accuracy. Test calculations were made on the basis of real GPS data, using one TRIMBLE mobile receiver and four nearest reference stations of the ASG-EUPOS geodetic system. In addition, DGNSS positioning computational simulations were performed for a case where one mobile GNSS receiver would be able to be used with two (e.

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Clark, David J. "Nucleosome Positioning, Nucleosome Spacing and the Nucleosome Code." Journal of Biomolecular Structure and Dynamics 27, no. 6 (2010): 781–93. http://dx.doi.org/10.1080/073911010010524945.

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CYBULSKA-GAC, Klaudia, Kamil KRASUSKI, and Adam CIEĆKO. "ACCURACY ANALYSIS OF GALILEO CODE POSITIONING FOR UAV." Scientific Journal of Silesian University of Technology. Series Transport 127 (June 1, 2025): 39–55. https://doi.org/10.20858/sjsutst.2025.127.3.

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Official ICAO certification for the Galileo satellite navigation system is currently being implemented for aeronautical applications. Hence, experimental studies are needed to verify the performance of Galileo for kinematic positioning of the user in aviation. The main objective of this work is to present an optimal computational strategy for determining the user's position and the accuracy parameter of Galileo positioning in civil aviation. The paper uses the least squares method and Kalman filtering to calculate the user position. The calculations were performed in two independent Galileo ob

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Bakuła, M. "Static Network Code Dgps Positioning vs. Carrier Phase Single Baseline Solutions for Short Observation time and Medium-Long Distances." Artificial Satellites 42, no. 3 (2007): 167–83. http://dx.doi.org/10.2478/v10018-008-0009-9.

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Static Network Code Dgps Positioning vs. Carrier Phase Single Baseline Solutions for Short Observation time and Medium-Long DistancesGPS land surveys are usually based on the results of processing GPS carrier phase data. Code or pseudorange observations due to considerations of accuracy requirements and robustness are preferred in navigation and some GIS applications. Generally, the accuracy of that positioning is in the range of about 1-2 meters or so, on average. But the main problem in code GPS positioning is to know how to estimate the real accuracy of DGPS positions. It is not such an eas

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Jones, Peter A. "Decoding the Chromatin Code." Blood 120, no. 21 (2012): SCI—4—SCI—4. http://dx.doi.org/10.1182/blood.v120.21.sci-4.sci-4.

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Abstract Abstract SCI-4 Epigenetic processes are reinforced by interactions between covalent chromatin marks such as DNA methylation, histone modifications, and variants thereof. These marks ultimately specify the locations of nucleosomes, particularly with respect to transcriptional start sites and other regulatory regions. Understanding how the epigenome functions, therefore, requires a coordinated approach in order to reveal the mechanisms by which the chemical modifications interact with nucleosomal remodeling machines to ensure epigenetic inheritance and control of gene expression. We hav

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Farah, A. "Code Single Point Positioning Using Nominal Gnss Constellations (Future Perception)." Artificial Satellites 42, no. 3 (2007): 149–53. http://dx.doi.org/10.2478/v10018-008-0007-y.

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Code Single Point Positioning Using Nominal Gnss Constellations (Future Perception) Global Navigation Satellite Systems (GNSS) have an endless number of applications in industry, science, military, transportation and recreation & sports. Two systems are currently in operation namely GPS (the USA Global Positioning System) and GLONASS (the Russian GLObal NAvigation Satellite System), and a third is planned, the European satellite navigation system GALILEO. The potential performance improvements achievable through combining these systems could be significant and expectations are high. The ne

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Thi Thu, NGUYEN. "POSITIONING AND NAVIGATION TECHNIQUES FOR AUTONOMOUS VEHICLES USING QR CODE." Vinh University Journal of Science 54, no. 2A (2025): 40–50. https://doi.org/10.56824/vujs.2025a017a.

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This paper presents an autonomous vehicle system's design, development, and programming process utilizing QR code- based positioning and navigation technology. During system development, the STM32F407 microcontroller is employed to control two motors with integrated encoders, where the PID controller and trapezoidal velocity control method are applied to optimize operational performance. The microcontroller processes data received from the embedded computer and provides feedback via the Universal Asynchronous Receiver Transmitter (UART) protocol. The system integrates a Raspberry Pi 4 embedded

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Yu, Danni. "Genre as an Act of Positioning." Written Communication 41, no. 3 (2024): 539–65. http://dx.doi.org/10.1177/07410883241242101.

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This article explores genres as recurrent acts of positioning that contribute to associating particular positions with the genre users as social actors. As an illustration, the study investigates the positioning of Chinese university presidents in their published opening convocation speeches. By combining rhetorical move analysis with the positioning triangle framework, this study demystifies three positions conventionally used by university presidents in the genre: guiding educator, morale builder, and university representative. These positions, legitimized by the role of the university presi

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Yoshizawa, Shingo, Atsushi Wada, and Hideki Sugimoto. "Underwater Acoustic Positioning for Close Sources Using Time Division and Code Division Multiplexing." International Journal of Circuits, Systems and Signal Processing 17 (March 29, 2023): 170–76. http://dx.doi.org/10.46300/9106.2023.17.20.

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Underwater acoustic positioning system (UAPS) is used to know the positions of underwater robots and underwater structures. In ultra-short baseline (USBL) acoustic positioning systems, the three-dimensional position is determined by measuring the time difference of arrival (TDOA). In this paper, we investigate the acoustic positioning system targeting multiple sound sources and propose a simultaneous multi-point measurement method using time division and code division multiplexing (TD-CDM). TD-CDM provides higher position accuracy than code division multiplexing (CDM) and has a much shorter po

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Deng, Zhongliang, Jun Mo, Buyun Jia, and Xinmei Bian. "A Fine Frequency Estimation Algorithm Based on Fast Orthogonal Search (FOS) for Base Station Positioning Receivers." Electronics 7, no. 12 (2018): 376. http://dx.doi.org/10.3390/electronics7120376.

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Base station signals have been widely studied as a promising navigation and positioning signal. The time and code division-orthogonal frequency division multiplexing (TC-OFDM) signal is a novel communication and navigation fusion signal that can simultaneously implement communication and positioning services. The TC-OFDM signal multiplexes the pseudorandom noise (PRN) code, called positioning code, and the Chinese mobile multimedia broadcasting (CMMB) signal in the same frequency band. For positioning in the TC-OFDM receiver, it is necessary to acquire and track the PRN code phase and the carr

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Hakimpour, F., and A. Zare Zardiny. "LOCATION BASED SERVICE IN INDOOR ENVIRONMENT USING QUICK RESPONSE CODE TECHNOLOGY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-2/W3 (October 22, 2014): 137–40. http://dx.doi.org/10.5194/isprsarchives-xl-2-w3-137-2014.

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Today by extensive use of intelligent mobile phones, increased size of screens and enriching the mobile phones by Global Positioning System (GPS) technology use of location based services have been considered by public users more than ever.. Based on the position of users, they can receive the desired information from different LBS providers. Any LBS system generally includes five main parts: mobile devices, communication network, positioning system, service provider and data provider. By now many advances have been gained in relation to any of these parts; however the users positioning especi

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Choy, S., and D. Silcock. "Single Frequency Ionosphere-free Precise Point Positioning: A Cross-correlation Problem?" Journal of Geodetic Science 1, no. 4 (2011): 314–23. http://dx.doi.org/10.2478/v10156-011-0011-1.

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Single Frequency Ionosphere-free Precise Point Positioning: A Cross-correlation Problem?This research investigates the feasibility of applying the code and the ionosphere-free code and phase delay observables for single frequency Precise Point Positioning (PPP) processing. Two observation models were studied: the single frequency ionosphere-free code and phase delay, termed the quasi-phase observable, and the code and quasi-phase combination. When implementing the code and quasi-phase combination, the cross-correlation between the observables must be considered. However, the development of an

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Hu, Lingyue, Guanbin Zhong, Zhiwei Chen, and Zhong Chen. "DataMatrix Code Recognition Method Based on Coarse Positioning of Images." Electronics 14, no. 12 (2025): 2395. https://doi.org/10.3390/electronics14122395.

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A DataMatrix (DM) code is an automatic identification barcode based on a combination of coding and image processing. Traditional DM code sampling methods are mostly based on simple segmentation and sampling of a DM code. However, the obtained DM code images often have problems such as wear, corrosion, geometric distortion, and strong background interference in practical scenarios. To improve decoding ability in complex environments, a DM code recognition method based on coarse positioning of images is proposed. The two-dimensional barcode is first converted into a one-dimensional waveform usin

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Pepe, Massimiliano, Domenica Costantino, Gabriele Vozza, and Vincenzo Saverio Alfio. "Comparison of Two Approaches to GNSS Positioning Using Code Pseudoranges Generated by Smartphone Device." Applied Sciences 11, no. 11 (2021): 4787. http://dx.doi.org/10.3390/app11114787.

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The release of Android 7.0 has made raw GNSS positioning data available on smartphones and, as a result, this has allowed many experiments to be developed to evaluate the quality of GNSS positioning using mobile devices. This paper investigates the best positioning, using pseudorange measurement in the Differential Global Navigation Satellite System (DGNSS) and Single Point Positioning (SPP), obtained by smartphones. The experimental results show that SPP can be comparable to the DGNSS solution and can generally achieve an accuracy of one meter in planimetric positioning; in some conditions, a

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Shen, Zilong, Wenxiang Liu, Zhongwang Wu, Jing Peng, and Feixue Wang. "The Coarse-Position-Free Coarse-Time Positioning Method for BDS Receiver." Mathematical Problems in Engineering 2019 (March 18, 2019): 1–16. http://dx.doi.org/10.1155/2019/8961285.

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The Coarse-Time Positioning method is important for the quick positioning of the BeiDou Navigation Satellite System (BDS) navigation receiver in the weak signal environment. The coarse position estimation is the key technology of the Coarse-Time Positioning (CTP) for the BDS navigation receiver without coarse position assistance. In this paper, a Coarse-Position-Free Coarse-Time Positioning method based on mixed-type code phase ambiguity resolution is proposed. In this CTP method, in order to estimate the approximate position, the coarse position estimation method based on the mixed-type code

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Demarchi, Leonardo, Andriy Goychuk, Ivan Maryshev, and Erwin Frey. "Source Code - Enzyme-enriched condensates show self-propulsion, positioning, and coexistence." Physical Review Letters 130, no. 12 (2023): 128401. https://doi.org/10.5281/zenodo.7347561.

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This repository contains the source code for the Finite Element simulations, and a Mathematica notebook that illustrates analytic calculations, for the article "<em>Enzyme-Enriched Condensates Show Self-Propulsion, Positioning, and Coexistence</em>" published in <em>Physical Review Letters</em> <strong>130</strong>, 128401. File Description AnalyticCalculations-1d.nb Mathematica notebook that illustrates the analytical calculations. steady_state_1d_droplet.zip Source code and data for 1D FEM simulations of a droplet in steady state. self_propulsion_instability.zip Source code and dat

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Petit, Gérard, and Zhiheng Jiang. "Precise Point Positioning for TAI Computation." International Journal of Navigation and Observation 2008 (February 28, 2008): 1–8. http://dx.doi.org/10.1155/2008/562878.

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We discuss the use of some new time transfer techniques for computing TAI time links. Precise point positioning (PPP) uses GPS dual frequency carrier phase and code measurements to compute the link between a local clock and a reference time scale with the precision of the carrier phase and the accuracy of the code. The time link between any two stations can then be computed by a simple difference. We show that this technique is well adapted and has better short-term stability than other techniques used in TAI. We present a method of combining PPP and two-way time transfer that takes advantage

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Li, Mowen, Wenfeng Nie, Tianhe Xu, Adria Rovira-Garcia, Zhenlong Fang, and Guochang Xu. "Helmert Variance Component Estimation for Multi-GNSS Relative Positioning." Sensors 20, no. 3 (2020): 669. http://dx.doi.org/10.3390/s20030669.

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The Multi-constellation Global Navigation Satellite System (Multi-GNSS) has become the standard implementation of high accuracy positioning and navigation applications. It is well known that the noise of code and phase measurements depend on GNSS constellation. Then, Helmert variance component estimation (HVCE) is usually used to adjust the contributions of different GNSS constellations by determining their individual variances of unit weight. However, HVCE requires a heavy computation load. In this study, the HVCE posterior weighting was employed to carry out a kinematic relative Multi-GNSS p

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Ba, Xiaohui, Taibin Liu, Wei Jiang, et al. "Design of Universal Code Generator for Multi-Constellation Multi-Frequency GNSS Receiver." Electronics 13, no. 7 (2024): 1244. http://dx.doi.org/10.3390/electronics13071244.

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A multi-constellation, multi-frequency Global Navigation Satellite System (GNSS) receiver is capable of simultaneously receiving signals from multiple satellite constellations across various frequency bands. This allows for increased observations, thereby enhancing navigation accuracy, continuity, effectiveness, and reliability. The spread spectrum code structures used in satellite navigation signals differ among systems. Compatible code generators are employed in multi-constellation, multi-frequency GNSS receivers to support tasks such as signal acquisition and tracking. There are three main

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Cohanim, Amir B., and Tali E. Haran. "The coexistence of the nucleosome positioning code with the genetic code on eukaryotic genomes." Nucleic Acids Research 37, no. 19 (2009): 6466–76. http://dx.doi.org/10.1093/nar/gkp689.

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Bae, Tae-Suk. "VRS-based Precision Positioning using Civilian GPS Code Measurements." Korean Journal of Geomatics 29, no. 2 (2011): 201–8. http://dx.doi.org/10.7848/ksgpc.2011.29.2.201.

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Zhao, Wankang, David Whalley, Christopher Healy, and Frank Mueller. "Improving WCET by applying a WC code-positioning optimization." ACM Transactions on Architecture and Code Optimization 2, no. 4 (2005): 335–65. http://dx.doi.org/10.1145/1113841.1113842.

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Leem, SungJin, JiSu Park, and Jin Gon Shon. "A Study on Road-Based 3D Positioning Identification Code." Journal of Korean Institute of Information Technology 16, no. 12 (2018): 69–74. http://dx.doi.org/10.14801/jkiit.2018.16.12.69.

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Zhang, Xiao, Zhi-xing Wang, and Xiang-yin Li. "Positioning algorithm of a new periodic bar code ruler." Measurement Science and Technology 17, no. 4 (2006): 876–80. http://dx.doi.org/10.1088/0957-0233/17/4/037.

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Trifonov, Edward N. "Cracking the chromatin code: Precise rule of nucleosome positioning." Physics of Life Reviews 8, no. 1 (2011): 39–50. http://dx.doi.org/10.1016/j.plrev.2011.01.004.

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Elghazouly, Alaa A., Mohamed I. Doma, and Ahmed A. Sedeek. "Estimating satellite and receiver differential code bias using a relative Global Positioning System network." Annales Geophysicae 37, no. 6 (2019): 1039–47. http://dx.doi.org/10.5194/angeo-37-1039-2019.

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Abstract. Precise total electron content (TEC) is required to produce accurate spatial and temporal resolution of global ionosphere maps (GIMs). Receivers and satellite differential code biases (DCBs) are one of the main error sources in estimating precise TEC from Global Positioning System (GPS) data. Recently, researchers have been interested in developing models and algorithms to compute DCBs of receivers and satellites close to those computed from the Ionosphere Associated Analysis Centers (IAACs). Here we introduce a MATLAB code called Multi Station DCB Estimation (MSDCBE) to calculate sa

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Lin, Sheng-Xin, Xiao-Fang Zhao, and Hua-Zhu Liu. "Vision-based fast location of multi-bar code in any direction." Modern Physics Letters B 31, no. 19-21 (2017): 1740047. http://dx.doi.org/10.1142/s0217984917400474.

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The automatic location of the bar code is a key step in the bar code image recognition system. It is extremely confined that the generalization of the traditional bar code localization algorithms due to the requirements of both direction and quality of bar code, and most of them are only aimed at the single barcode localization. In this paper, we have proposed a novel multi-barcode location algorithm in arbitrary direction based on the accumulation of the linear gray value. First, the line coordinates of the barcode region is determined by the image normalized cross-correlation algorithm. Then

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Ma, Lihua, Guoxiang Ai, and Ting Kong. "Physical Augmentation Factor of Precision in Gnss." Artificial Satellites 57, no. 3 (2022): 185–93. http://dx.doi.org/10.2478/arsa-2022-0009.

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Abstract The dilution of precision (DOP) in satellite navigation system provides a simple characterization of the user–satellite geometry and a quantitative assessment of the positioning constellation configuration. The essential idea of physical augmentation factor of precision (PAFP) proposed in this work, is that navigation signals are transmitted at multiple frequencies from each visible satellite in the positioning constellation, while users measure the corresponding multiple pseudoranges of satellites to achieve high precision code positioning. As the multiple pseudoranges of one satelli

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Cao, Xiang, Qing Wang, Chengfa Gao, and Jie Zhang. "Accounting for the differential inter-system bias (DISB) of code observation in GPS+BDS positioning." Journal of Applied Geodesy 13, no. 1 (2019): 63–68. http://dx.doi.org/10.1515/jag-2018-0025.

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Abstract If the associated differential inter-system biases (DISBs) are priori known, only one common reference satellite is sufficient, which is called the inter-system model. The inter-system model can help to maximize the redundancy of the positioning model, and thus can improve the positioning performance, especially in harsh environment. However, in practice use not all receivers can be calibrated with DISBs in advance. In this paper, taking combined GPS and BDS pseudorange positioning as the example, we compare three positioning models and their positioning performance. One is traditiona

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Bakuła, Mieczysław, Marcin Uradziński, and Kamil Krasuski. "Performance of DGPS Smartphone Positioning with the Use of P(L1) vs. P(L5) Pseudorange Measurements." Remote Sensing 14, no. 4 (2022): 929. http://dx.doi.org/10.3390/rs14040929.

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This paper presents numerical analyzes of code differential GPS positioning with the use of two Huawei P30 Pro mobile phones. Code observations on L1 and L5 frequencies were chosen for DGPS positioning analysis. For project purposes, we additionally used one high-class geodetic GNSS receiver (Javad Alpha) acting as a reference station. Smartphones were placed at the same distance of 0.5 m from the reference receiver. Such a close distance was specially planned by the authors in order to achieve identical observation conditions. Thus, it was possible to compare the DGPS positioning accuracy usi

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AMAMI, MUSTAFA M. "ENHANCING STAND-ALONE GPS CODE POSITIONING USING STAND-ALONE DOUBLE DIFFERENCING CARRIER PHASE RELATIVE POSITIONING." Journal of The University of Duhok 20, no. 1 (2017): 347–55. http://dx.doi.org/10.26682/sjuod.2017.20.1.31.

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Hong, Xiaobo, Jun Wu, Yunzhou Zhang, and Yongxiang He. "Research on Absolute Positioning Sensor Based on Eddy Current Reflection for High-Speed Maglev Train." Sensors 20, no. 18 (2020): 5167. http://dx.doi.org/10.3390/s20185167.

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A novel absolute positioning sensor for high-speed maglev train based on eddy current effect is studied in this paper. The sensor is designed with photoelectric switch and four groups of unilateral coplanar code-reading detection coil combination. The photoelectric switch realizes the positioning of the marker plate, and the four groups of detection coils read the mileage code of the mileage sign plate to obtain the absolute mileage information of the vehicle, which effectively reduces the quality and volume of the sensor, and reduces the impact of ice and snow. At the same time, the code-read

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