Low-frequency Errors Compensation of Attitude Determination System in Satellite Photogrammetry

• Main Authors: WANG Renxiang, WANG Jianrong, HU Xin
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2016-02-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: satellite photogrammetry; low-frequency errors compensation; bundle adjustment; elements of exterior orientation; location accuracy
• Online Access: http://html.rhhz.net/CHXB/html/2016-2-127.htm

In the attitude determination system exists not only the high-frequency errors, but also the low-frequency errors related to the satellite orbit latitude and time. The low-frequency errors would affect the location accuracy without GCPs, especially to the horizontal accuracy. In this paper, firstly, the factors that produce low-frequency errors and the solutions are analyzed. Secondly, the low-frequency errors are detected and compensated automatically during bundle adjustment in TH-1 satellite, thus the influence of location accuracy by low-frequency error is eliminated. At last, the verification is tested using data of TH-1. The experimental results show: low-frequency errors compensation can resolve the system error of position without GCP, and has played an important role in the consistency of global location accuracy for TH-1.