High Accuracy Differential and Kinematic Gps Positioning Using a Digital Beam-steering Receiver
نویسندگان
چکیده
Proceedings of 2002 Core Technologies for Space Systems Conference, Colorado Springs, CO, November 2002 ABSTRACT The time, orbit and attitude data, obtained from GPS, enables spacecraft system developers to accomplish autonomous orbit maneuver planning and autonomous stationkeeping maneuvers on-board the spacecraft. Current generation GPS navigation will provide accuracy on the order of 2 to 5 meters. For future missions, which will involve formation flying of clusters of small satellites, more precise relative positioning accuracy is required. This can be achieved through the use of differential GPS (DGPS) and kinematic GPS (KGPS) relative positioning techniques. These techniques remove the effect of common GPS system errors between the cluster of satellites, leaving only the effect of receiver measurement errors on the precise positioning solution.
منابع مشابه
High Accuracy Kinematic Gps Performance Using a Digital Beam- Steering Array
In this paper, the performance of a digital beam steering antenna array, developed by NAVSYS Corporation, is presented for high accuracy differential and kinematic GPS applications. The NAVSYS’ High Gain Advanced GPS Receiver (HAGR). uses digital beam-steering to combine signals from an antenna array with up to sixteen elements and create a multi-beam antenna for up to eight GPS satellites simu...
متن کاملA GPS Digital Phased Array Antenna and Receiver
NAVSYS High Gain Advanced GPS Receiver (HAGR) uses a digital beam-steering antenna array to enable up to eight GPS satellites to be tracked, each with up to 10 dBi of additional antenna gain over a conventional receiver solution. This digital, PC-based architecture provides a cost-effective solution for commercial applications where more precise GPS measurements are needed. The additional gain ...
متن کاملHigh-gain Advanced Gps Receiver for Precision Gps Applications
NAVSYS has developed a GPS receiver, the HAGR (High-gain Advanced GPS Receiver), which uses digital beam steering to increase the precision of the GPS observations. In this paper, the HAGR is described and test data is included showing its enhanced performance for high accuracy scientific applications. When operating in a differential or kinematic positioning mode, HAGR provides low noise obser...
متن کاملHigh Precision Kinematic Positioning Using Single Dual-frequency Gps Receiver
Currently, high precision kinematic GPS positioning with centimetre level accuracy can only be carried out using differential GPS (DGPS) positioning techniques which require the deployment of base receiver stations. The requirement to deploy base receiver stations, however, spatially limits the operating range of the rover receiver to about 20 km from the base stations. As a result, it not only...
متن کاملGps Ionospheric Scintillation Measurements Using a Beam Steering Antenna
The ionosphere can affect GPS receivers by degrading the signal strength, in some cases causing loss of carrier lock, and by degrading the accuracy of differential corrections. As we enter the solar maximum years, these effects will become more severe, causing frequent GPS outages in the polar and equatorial regions and over the entire North American landmass when magnetic storms occur. These i...
متن کامل