方位维逆合成孔径雷达(ISAR)运动补偿成象中的预加处理

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1997, Vol. 18 ›› Issue (1): 89-92.

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PREPROCESSING FOR ISAR MOTION COMPENSATION AND IMAGING IN THE CORSS RANGE

She Zhishun, Zhu Zhaoda

Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing,210016

Received:1995-09-11 Revised:1996-01-25 Online:1997-02-25 Published:1997-02-25

Abstract

Abstract:

In order to obtain a high cross range resolution, a great number of data need to be processed for inverse synthetic aperture radar (ISAR) motion compensation and imaging in the crossrange. The preprocessing compresses the data by frequency shifting, filtering and decimation. As a result, the computational load of motion compensation and imaging is reduced, which is favorable to real time image formation. The processing results of the electromagnetic simulated data and the live data of the narrowband coherent radar are given, which show that the preprocessing is correct and effective.

Key words: prepr ocessing, data compression, synthetic aperture radar

CLC Number:

She Zhishun;Zhu Zhaoda. PREPROCESSING FOR ISAR MOTION COMPENSATION AND IMAGING IN THE CORSS RANGE[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1997, 18(1): 89-92.

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PREPROCESSING FOR ISAR MOTION COMPENSATION AND IMAGING IN THE CORSS RANGE

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