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| Study on Error Analysis of Geometric Distortion Correction and Compensation Techniques for Circular-Scan SAR |
| Mao Xin-hua Zhu Dai-yin Li Yong Zhu Zhao-da |
| (College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) |
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Abstract Circular-Scan SAR is mainly used for scene matching in the precision-guided missiles, where geometry accuracy is very important. However, due to errors introduced by the GPS/IMU, it remains somewhat geometric distortion after geometric distortion correction based on the GPS/IMU data. This paper analyzes the impact of the error of scan angle and aircraft height and aircraft velocity on the image quality. Meanwhile, approaches to correcting these errors based on measured data are presented. Experiments carried out on measured data confirm the validity of the analysis and the feasibility of the compensation scheme.
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Received: 08 May 2007
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Corresponding Authors:
Mao Xin-hua
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2008, Vol. 30 
