Deramp ω-k algorithm for high resolution space-borne spotlight SAR

作者：Ding Ze Gang^*; Long Teng; Zhu Yu; Zhang Shun Sheng

来源：Transactions of Beijing Institute of Technology, 2007, 27(SUPPL. 1): 56-59.

• Deramp ark algorithm
• Equivalent speed
• Space borne spotlight synthetic aperture radar (SAR)

Deramp ω-k algorithm(DRMA) is designed to process the high-resolution space-borne spotlight SAR data. The algorithm is comprised of two steps. Firstly, azimuth Deramp processing is performed to reduce the Doppler bandwidth of the scene and lower limit of pulse repetition frequency, which efficiently decreases the data ratio of raw data and increases the swath width. Secondly, the residual focusing is performed by ω-k with little modification. Calculation of the equivalent speed which is of one auto-focusing parameter is also given. Finally, the correctness of the designed algorithm is validated by computer simulation.

• 出版日期2007
• 单位北京理工大学