Fine C/A code acquisition algorithm for weak GPS signal based on averaging correlation and differential coherent accumulation by IXin-shan L, UOWei G

“…Aiming at the problem of global positioning system (GPS) C/A code acquisition under weak signal conditions,a code acquisition algorithm based on averaging correlation and differential coherent accumulation was proposed.First,the strength ratio of the largest peak to the second largest peak was adopted as the decision variable; optimum decision thresholds can be obtained through the simulation probability of false alarm of all kinds of acquisition algorithms.Second,by setting the decision threshold,the probabilities of detection of different Doppler frequency deviation and signal to noise ratio (SNR) were obtained.Finally,acquisition sensitivities of the code acquisition algorithm based on the differen-tial coherent accumulation were compared with those of the code acquisition algorithm based on coherent and noncoher-ent accumulation and the code acquisition algorithm based on noncoherent accumulation.Simulation results show that acquisition sensitivities of the code acquisition algorithm based on the differential coherent accumulation are improved by about 2.0 dB than those of the other two acquisition algorithms under the same receiving data length condition.…”
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UFIR Filtering for GPS-Based Tracking over WSNs with Delayed and Missing Data by Karen Uribe-Murcia, Yuriy S. Shmaliy, Jose A. Andrade-Lucio

“…In smart cities, vehicles tracking is organized to increase safety by localizing cars using the Global Positioning System (GPS). The GPS-based system provides accurate tracking but is also required to be reliable and robust. …”
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Personalized service recommendations for travel using trajectory pattern discovery by Zongtao Duan, Lei Tang, Xuehui Gong, Yishui Zhu

“…Experiments were conducted employing a real global positioning system–based dataset. The test results demonstrated that our proposed approach could reduce the deviation of the trajectory measurement to 10% and enhance the success rates of the service recommendations to 60%.…”
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Planetary Sciences, Geodynamics, Impacts, Mass Extinctions, and Evolution: Developments and Interconnections by Jaime Urrutia-Fucugauchi, Ligia Pérez-Cruz

“…Research frontiers in geophysics are being expanded, with development of new fields resulting from technological advances such as the Earth observation satellite network, global positioning system, high pressure-temperature physics, tomographic methods, and big data computing. …”
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Real-time predication and navigation on traffic congestion model with equilibrium Markov chain by Yan Zheng, Yanran Li, Chung-Ming Own, Zhaopeng Meng, Mengya Gao

“…Accordingly, by dividing the real-time Global Positioning System data of taxis in Shenzhen city into 50 regions, the equilibrium Markov chain model was designed for dispatching vehicles and applied to ease the city congestion. …”
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Solar Cycle Variations of GPS Amplitude Scintillation for the Polar Region by K. Meziane, A. Kashcheyev, S. Patra, P. T. Jayachandran, A. M. Hamza

“…Abstract Global Positioning System (GPS) L1 amplitude data, obtained using the Canadian High Arctic Ionospheric Network (CHAIN) during the period 2008–2018, is used to study the seasonal and solar cycle dependence of high‐latitude amplitude scintillation. …”
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The role of sensors in smart agriculture by Seyyed Nourkhah, Goran Cirovic, Seyyed Edalatpanah

“…Smart agriculture has roots in the 1980s when Global Positioning System (GPS) capability became accessible for civilian use. …”
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An Effective Approach to Improving Low-Cost GPS Positioning Accuracy in Real-Time Navigation by Md. Rashedul Islam, Jong-Myon Kim

“…Positioning accuracy is a challenging issue for location-based applications using a low-cost global positioning system (GPS). This paper presents an effective approach to improving the positioning accuracy of a low-cost GPS receiver for real-time navigation. …”
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Composite GPS Patch Antenna for the AR Bandwidth Enhancement by Minkil Park, Wonhee Lee, Taeho Son

“…A composite Global Positioning System (GPS) patch antenna with a quadrature 3 dB hybrid coupler was designed and implemented for working RHCP and had a broadband axial ratio (AR) bandwidth. …”
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Predicting noncontact injuries of professional football players using machine learning. by Diogo Nuno Freitas, Sheikh Shanawaz Mostafa, Romualdo Caldeira, Francisco Santos, Eduardo Fermé, Élvio R Gouveia, Fernando Morgado-Dias

“…Yet, most research on this topic is retrospective, focusing solely on statistical correlations between Global Positioning System (GPS) metrics and injury occurrence, overlooking the multifactorial nature of injuries. …”
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The Effect of Pitch Surface on Match Running Performance in Women’s Soccer by Manca Kutnjak, Vladimir Pavlinovic, Toni Modric

“…The players’ MRPs (AT; 96 observations, NG; 80 observations) were obtained from all matches (<i>n</i> = 22) of the First Slovenian women’s football league in the season 2023/24 using a global positioning system. Data were categorized into four subsets according to the players’ tactical roles: central defensive player (CD), wide defensive player (FB), midfield player (CM), and offensive player (OF). …”
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Energy efficient multi-hop routing protocol for smart vehicle monitoring using intelligent sensor networks by Yuvaraja Teekaraman, Hariprasath Manoharan, Ramya Kuppusamy, Shabana Urooj, Fadwa Alrowais

“…Therefore, these wireless sensor networks can be installed on a vehicle not only for monitoring perseverance but also for corroborating security with the support of a Global Positioning System expedient. In addition, the projected work focuses on reliable communiqué which is defined in terms of network reliability with discrepancy in reporting rate at each base station. …”
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The Crossed-Dipole Antenna with Torang-shaped Parasitic Elements and Circular Polarization for GPS Application by Amir Siahcheshm

“…This paper presents a circularly polarized (CP) printed crossed-dipole antenna for Global Positioning System (GPS) receptions in the L1 (1575 MHz) band. …”
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A Bayesian Inference‐Based Empirical Model for Scintillation Indices for High‐Latitude by K. Meziane, A. Kashcheyev, P. T. Jayachandran, A. M. Hamza

“…For the present study, measurements from three Global Positioning System (GPS) L1 receivers located in the auroral zone, the cusp and in the polar cap are selected, respectively. …”
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Strong Relativistic Electron Flux Events in GPS Orbit by Nigel P. Meredith, Thomas E. Cayton, Michael D. Cayton, Richard B. Horne

“…In this study we analyze approximately 20 years of data from the US Global Positioning System (GPS) satellite NS41 to determine the conditions associated with the largest daily averaged fluxes of E = 2.0 MeV relativistic electrons. …”
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An Innovative Architecture of UTC GPS/INS System with Improved Performance under Severe Jamming by Xueyun Wang, Jingjuan Zhang, Wei Wang, Pengyu Gao

“…Ultratightly coupled (UTC) architecture is believed to be the best architecture for Global Positioning System (GPS) and Inertial Navigation System (INS) integration system due to the advanced data fusion strategy and effective mutual assistance between the subsystems. …”
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Distributed sensing units deploying on group unmanned vehicles by Bao Rong Chang, Hsiu-Fen Tsai, Jyong-Lin Lyu, Chien-Feng Huang

“…During the experiment of unmanned aerial vehicle, unmanned aerial vehicle will plan the flight path and record the movement trajectory with global positioning system when it is on duty. As a result, the accuracy of the planned flight path achieved 86.89% on average.…”
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Triple-Frequency GPS Precise Point Positioning Ambiguity Resolution Using Dual-Frequency Based IGS Precise Clock Products by Fei Liu, Yang Gao

“…With the availability of the third civil signal in the Global Positioning System, triple-frequency Precise Point Positioning ambiguity resolution methods have drawn increasing attention due to significantly reduced convergence time. …”
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Comparison and Analysis of Matching patterns using Simulation with Subsurface Navigation Approach Based on Magnetic Maps by Ali Hasankhani

“…The related system design is also discussed.It is very important to use a backup positioning system at times or places where global positioning system is not available. Magnetic navigation methods or positioning using the Earth's magnetic field have recently attracted the attention of researchers and military experts around the world.Key words: Information security, subsurface navigation, independent of GPS, magnetism, matching algorithm, simulation…”
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Ps Based Car Tracking System: A Case Study of Smartwatch Solutions Ltd. by Turigye, Charbel, Owomugisha, Susan

“…It is an embedded system that is used for tracking and positioning of any vehicle by using Global Positioning System (GPS) and Global system for mobile communication (GSM). …”
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