Geo-correction Algorithm Based on Equivalent RD Model for ScanSAR of HJ-1-C Satellite

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Abstract

HJ-1C satellite was the first synthetic aperture radar satellite for civil use in China, it had the strip and scan mode. According to the characteristics of ScanSAR of HJ-1C satellite, a geo-correct algorithm based on equivalent RD model was given in this paper on the base of ECS image processing algorithm and traditional Range-Doppler location method. First azimuth mosaic was presented by time serial relationship, then the different burst was stitched by range, the equivalent parameters were fitted to location on RD model. At last the ScanSAR image was geo-corrected. The HJ-1C satellite data results showed that the location accuracy of ScanSAR of HJ-1C satellite less than 100 m and the geo-correct algorithm was realized in 10 s under 24 cores parallel.

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	Articles by authors
	Liu Jia-yin
	Wen Shuang-yan
	Zhang Hong-yi
	HONG Wen

Key words： HJ-1C satellite ScanSAR mode Equivalent RD model SAR geo-correct

Received: 2013-06-09; Published: 2013-11-06

Cite this article:

Liu Jia-yin,Wen Shuang-yan,Zhang Hong-yi et al. Geo-correction Algorithm Based on Equivalent RD Model for ScanSAR of HJ-1-C Satellite[J]. JOURNAL OF RADARS, 2014, 3(3): 361-367.

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