An Accurate High-Order Errors Suppression and Cancellation Method for High-Precision Airborne POS

作者：Zhu, Zhuangsheng^*; Li, Chi; Zhou, Xiangyang^*

来源：IEEE Transactions on Geoscience and Remote Sensing, 2018, 56(9): 5357-5367.

DOI：10.1109/TGRS.2018.2815079

• Global positioning system (GPS)/inertia navigation system (INS)
• high-order error
• motion compensation
• position and orientation system (POS)
• synthetic aperture radar (SAR)

Synthetic aperture radar imaging requires precise position information provided by position and orientation system (POS), especially sensitive to high-order errors of position information, whereas high-order errors of global positioning system (GPS) are normally ignored in POS solution procedure. For high-precision POS, high-order errors become a significant error source with decisive effects on the accuracy of POS. In this paper, we propose a GPS high-order position errors suppression and cancellation method, which includes the traditional GPS/inertia navigation system (INS) integrated method used as the high-frequency filter, and the low-frequency filter is based on least squares support vector machine. The high-and low-frequency dual filters are constructed to suppress and eliminate high-order error. In verifying our dual-rate hybrid filtering method, POS flight experiments were conducted in November and October up to December in 2015, with results showing that the high-order position accuracy of high-precision POS (0.01 degrees/h gyro drift) is better than 0.006 m, and the proposed method has a better performance compared with other methods.

• 出版日期2018-9
• 单位北京航空航天大学