Accurate Positioning with Stereo SAR Images and One Ground Control Point

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Abstract Geometrical imaging models and calculations of orientation parameters are the main factors affecting the positioning of stereo Synthetic Aperture Radar (SAR) images. For accurate positioning with squint stereo SAR images and less Ground Control Points (GCPs), a positioning algorithm with one GCP is designed. In this algorithm, the position and velocity of the radar antenna phase center are derived using orbit parameters, and the close range and Doppler centroid of the SAR images are compensated by one GCP. Thus, accurate orientation parameters are obtained and accurate positioning with stereo SAR images is completed. Airborne SAR images acquired by the Chinese Academy of Surveying and Mapping are used in experiments. The positioning errors of the checkpoints are calculated and analyzed, and it verified the accuracy and effectiveness of the proposed method.

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	Articles by authors
	Zhang Hong-min
	Jin Guo-wang
	Xu qing
	Li Xiang-ying

Key words： Synthetic Aperture Radar (SAR) Stereo Positioning Range-Doppler Ground Control Point (GCP)

Received: 2013-12-23; Published: 2014-03-24

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Zhang Hong-min,Jin Guo-wang,Xu qing et al. Accurate Positioning with Stereo SAR Images and One Ground Control Point[J]. JOURNAL OF RADARS, 2014, 3(1): 85-91.

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