GPS and DGPS error sources and developing a DGPS post processing software

Ocak, Mustafa


GPS positioning and groung-truth reference points generation
Bshara, Mussa; Orguner, Umut; Gustafsson, Fredrik; Van Biesen, Leo (null; 2011-06-17)
GPS/INS enhancement for land navigation using neural network
Kaygisiz, BH (Cambridge University Press (CUP), 2004-05-01)
We propose in this paper a method to enhance the performance of a coupled global positioning/inertial navigation system (GPS/INS) for land navigation applications during GPS signal loss. Our method is based on the use of an artificial neural network (ANN) to intelligently aid the GPS/INS Coupled navigation system in the absence of GPS signals. The proposed enhanced GPS/INS is tested in the dynamic environment of a land vehicle navigating around a closed path on the METU campus and we provide the results. Ou...
GPS-based real-time orbit determination of artificial satellites using kalman, particle, unscented kalman and H-infinity filters
Erdoğan, Eren; Karslıoğlu, Mahmut Onur; Department of Geodetic and Geographical Information Technologies (2011)
Nowadays, Global Positioning System (GPS) which provide global coverage, continuous tracking capability and high accuracy has been preferred as the primary tracking system for onboard real-time precision orbit determination of Low Earth Orbiters (LEO). In this work, real-time orbit determination algorithms are established on the basis of extended Kalman, unscented Kalman, regularized particle, extended Kalman particle and extended H-infinity filters. Particularly, particle filters which have not been applie...
GPS-Based Real-Time Orbit Determination of Low Earth Orbit Satellites Using Robust Unscented Kalman Filter
Karslıoğlu, Mahmut Onur; Erdogan, Eren; Pamuk, Onur (2017-11-01)
In this research, a novel algorithm for real-time orbit determination (RTOD) is presented using the robust unscented Kalman filter (RUKF) with global positioning system (GPS) group and phase ionospheric correction (GRAPHIC) observables. To increase the reliability of the solution, a robust approach is included in the UKF to cope with the bad, invalid, or degraded measurements leading to the divergence or inaccurate output of the filter. Robustness is provided by making the filter less sensitive to faulty me...
GPS based altitude control of an unmanned air vehicle using digital terrain elevation data
Ataç, Selçuk; Platin, Bülent Emre; Department of Mechanical Engineering (2006)
In this thesis, an unmanned air vehicle (UAV) is used to develop a prototype base test platform for flight testing of new control algorithms and avionics for advanced UAV system development applications. A control system that holds the UAV at a fixed altitude above the ground is designed and flight tested. Only the longitudinal motion of the UAV is considered during the controller design, hence its lateral motions are controlled manually by a remote control unit from the ground. UAV’s altitude with respect ...
Citation Formats
M. Ocak, “GPS and DGPS error sources and developing a DGPS post processing software,” Middle East Technical University, 2001.