| 方位维逆合成孔径雷达(ISAR)运动补偿成象中的预加处理 |
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| 引用本文： | 佘志舜,朱兆达.方位维逆合成孔径雷达(ISAR)运动补偿成象中的预加处理[J].航空学报,1997,18(1):89-92. |
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| 作者姓名： | 佘志舜 朱兆达 |
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| 作者单位： | 南京航空航天大学电子工程系 |
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| 基金项目： | 国家“863”计划和航空科学基金 |
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| 摘 要： | 在方位维逆合成孔径雷达（ISAR）运动补偿成象中，为了获得方位维的高分辨力，需要处理的数据量很大。预加处理首先对原始数据进行频移和滤波，然后由滤波后的数据进行抽取，从而大大压缩了所需处理的数据，减小了运动补偿和成象的计算量，提高了成象处理速度。电磁仿真数据和外场实测数据的处理结果验证了预加处理的有效性。
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| 关 键 词： | 预处理 数据压缩 合成孔径雷达 |
PREPROCESSING FOR ISAR MOTION COMPENSATION AND IMAGING IN THE CORSS RANGE |
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| She Zhishun,Zhu Zhaoda.PREPROCESSING FOR ISAR MOTION COMPENSATION AND IMAGING IN THE CORSS RANGE[J].Acta Aeronautica et Astronautica Sinica,1997,18(1):89-92. |
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| Authors: | She Zhishun Zhu Zhaoda |
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| Institution: | Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing,210016 |
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| 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. |
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| Keywords: | preprocessing data compression synthetic aperture radar |
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