نتایج جستجو برای: gps observation processing

تعداد نتایج: 709006  

Journal: :IOP conference series 2023

Abstract The article presents an algorithm for collective management decision-making. developed is based on Bayesian mechanisms resolving contradictions when choosing methods processing of decisions. used phased Earth remote sensing data in order to identify agricultural crops. Functional satellite images created using the increase accuracy identifying plant objects. With help GPS navigator obs...

2001
Wilbur L. Myrick J. Scott Goldstein Michael D. Zoltowski

This paper investigates the performance of reduced rank spacetime processors in the context of anti-jam mitigation for an MCode based GPS receiver utilizing a circular array. Several adaptive processing algorithms are discussed utilizing power minimization techniques. It is assumed an INS (Inertial Navigation System) or direction finding algorithm is incorporated into the receiver for satellite...

2009
V. Behar G. Gaydadjiev

This paper analyzes the influence of the space-time signal processing technique on the performance of GPS signal acquisition in conditions of strong broadband interference (jamming) and multipath. The space-time processing method used for effective mitigation of GPS interference before processing by a conventional acquisition algorithm is the Minimum Variance Distortionless Response beamforming...

2005
Gang Chen Ronald G. Prinn

The object of this thesis is to develop a reliable algorithm and soft\vare for em-level kinematic GPS (Global Positioning System) data analysis. To assess the accuracy of the softvlare, we use it to determine the trajectory of the aircraft during the surveys at Long Valley, California, in 1993 and 1995. This thesis covers the algorithm development, the modeling, and the software design. We impl...

2005
Kefei Zhang Youjian Hu Gangjun Liu Falin Wu Rodney Deakin

This paper investigates the feasibility using continuously operating reference stations (CORS) in Victoria (termed GPSnet) for deformation monitoring and analysis. A number of critical issues associated with the suitability, geological stability, data quality of the GPS networks system, the precision and reliability of the GPSnet solution are investigated using geological information. Appropria...

2011
Ping Luo Mark G. Petovello

Weak GPS signal tracking is studied in this paper. To utilize the spatial correlation of the GPS signal among local receivers, a collaborative signal tracking structure is proposed. More specifically, the GPS signal parameter, carrier Doppler from a nearby receiver is provided to the target receiver as reference. An open-loop batch processing technique is used in this study, mainly to take adva...

Journal: :Periodica Polytechnica-civil Engineering 2023

Geodetic/geodynamic benchmarks, equipped with both ascending and descending radar corner reflectors, a method for integrated InSAR GNSS/GPS network observation were developed applied as the continuation of former geodetic monitoring at Dunaszekcső landslide, Hungary. The attempts to apply technologies using archive Sentinel-1 data practically failed on most intensive landside areas (“Vár” “Szen...

2010
Alison K. Brown Stephen Stankevich Bruce G. Johnson

This paper describes a GPS tracking solution that collects GPS broadband snapshots using NAVSYS’ patented TIDGET (“tracking widget”) sensor technology and postprocesses these snapshots to create a Precise Positioning System (PPS) solution using a SAASM receiver. This approach has the advantages of reducing the size, weight, cost and power of the electronics in the sensor while still producing a...

Journal: :Journal of geodesy 2022

Abstract Phase center offsets (PCOs) of global navigation satellites systems (GNSS) transmit antennas along the boresight axis introduce line-of-sight-dependent range changes in modeling GNSS observations that are strongly correlated with estimated station heights. As a consequence, adopted PCOs impact scale GNSS-based realizations terrestrial reference frame (TRF). Vice versa, TRF require corr...

2007
Raif M. Rustamov

A deformation invariant representation of surfaces, the GPS embedding, is introduced using the eigenvalues and eigenfunctions of the Laplace-Beltrami differential operator. Notably, since the definition of the GPS embedding completely avoids the use of geodesic distances, and is based on objects of global character, the obtained representation is robust to local topology changes. The GPS embedd...

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