Accurate Attitude Estimation Using ERS-1 Raw Data (WEAG EUCLID RTP 9.1 WP 33100)

摘要

This report is the final report of WEAG EUCLID RTP 9.1 Work Package 33100. Thepurpose of this work is to demonstrate accurate yaw and pitch estimation using ERS-1 raw data. An iterative Doppler centroid estimation technique is applied to achieve nearly the accuracy predicted from theory. Doppler centroid estimates at near and far range are used to estimate yaw and pitch and their standard deviation. The yaw and pitch were estimated with standard deviations less than 0.005 degrees and 0.002 degrees, respectively. The yaw and pitch angles were typically less than about 0.03 degrees and a significant variation over one ERS-1 scene is observed. Accurate attitudes estimated from Synthetic Aperture Radar (SAR) data are useful for other instruments on the same platform as the SAR such as processing of optical images.