A new imaging algorithm for synthetic aperture radar mosaic mode

作者：Li, Cai-Pin; He, Ming-Yi

来源：Acta Armamentarii, 2015, 36(1): 111-116.

DOI：10.3969/j.issn.1000-1093.2015.01.016

• Chirp Z transform
• Mosaic mode
• Processing technologies
• Radar engineering
• Range-Doppler algorithm
• Range-migration correction
• Spectral algorithm
• Synthetic aperture radar mosaics

An imaging processing algorithm is proposed for the issues of squint imaging at the edge of imaging module and inconsistent pixel interval at different imaging blocks of mosaic mode. The signal azimuth spectrum aliasing in azimuth direction is eliminated effectively by using an improved de-ramping processing technology. On this basis, the range Doppler algorithm is used for range compression and range migration correction. Then the spectral algorithm based on CZT transform is used to eliminate the difference between the pixel intervals of sub-blocks. The simulation result shows that the proposed algorithm can be used for the imaging of mosaic mode.

• 出版日期2015-1-1
• 单位西北工业大学