Estimating the ionospheric refraction effect on interferometric GPS - Measurements
Abstract
A method is presented of realistically estimating the effects of missing ionospheric calibration on GPS determined baselines. The method is based on the experience gained with ionospheric path delays derived from Naval Navigation Satellite System Doppler observations. At present, short baseline determinations with the NAVSTAR Global Positioning System (GPS) in the interferometric or phase differencing mode suffer from lack of ionospheric calibration if only one of the two GPS-frequency bands can be used. The proposed method is expected to permit the use of low-cost clear/acquisition-code receivers for centimeter-accuracy baseline determinations.
- Publication:
-
International Symposium on Space Techniques for Geodynamics
- Pub Date:
- 1984
- Bibcode:
- 1984stg.....2..196C
- Keywords:
-
- Celestial Geodesy;
- Global Positioning System;
- Interferometry;
- Ionospheric Propagation;
- Radio Wave Refraction;
- Radiometric Correction;
- Atmospheric Correction;
- Calibrating;
- Coding;
- Navstar Satellites;
- Radio Receivers;
- Satellite Doppler Positioning;
- Time Lag;
- Space Communications, Spacecraft Communications, Command and Tracking