| タイトル | Autonomous Navigation Improvements for High-Earth Orbiters Using GPS |
| 本文（外部サイト） | http://hdl.handle.net/2060/20000092083 |
| 著者（英） | Kelbel, David; Lee, Taesul; Bauer, F.; Long, Anne; Carpenter, J. Russell; Garrison, James |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2000-01-01 |
| 言語 | eng |
| 内容記述 | The Goddard Space Flight Center is currently developing autonomous navigation systems for satellites in high-Earth orbits where acquisition of the GPS signals is severely limited This paper discusses autonomous navigation improvements for high-Earth orbiters and assesses projected navigation performance for these satellites using Global Positioning System (GPS) Standard Positioning Service (SPS) measurements. Navigation performance is evaluated as a function of signal acquisition threshold, measurement errors, and dynamic modeling errors using realistic GPS signal strength and user antenna models. These analyses indicate that an autonomous navigation position accuracy of better than 30 meters root-mean-square (RMS) can be achieved for high-Earth orbiting satellites using a GPS receiver with a very stable oscillator. This accuracy improves to better than 15 meters RMS if the GPS receiver's signal acquisition threshold can be reduced by 5 dB-Hertz to track weaker signals. |
| NASA分類 | Aircraft Communications and Navigation |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/226785 |
