一种弹载SAR子孔径成像算法

江淮; 陈思; 赵惠昌; 汉敏; 张淑宁

doi:10.11999/JEIT161337

一种弹载SAR子孔径成像算法

doi: 10.11999/JEIT161337

1.
(南京理工大学电子工程与光电技术学院南京 210094）②(东南大学微波与毫米波重点实验室南京 210094)

基金项目:

国家自然科学基金(61301216)，江苏省自然科学基金(BK20160848)

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- 文章访问数: 1299
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- 被引次数: 0
出版历程
- 收稿日期: 2016-12-08
- 修回日期: 2017-05-09
- 刊出日期: 2017-10-19

Subaperture Imaging Algorithm for Missile-borne SAR

1.
(School of Electronic &
2.
(State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210094, China)

Funds:

The National Natural Science Foundation of China (61301216), The Natural Science Foundation of Jiangsu Province (BK20160848)

摘要

摘要: 弹载合成孔径雷达在子孔径信号处理时，由于运动的复杂性和距离方位的强耦合，增加了成像处理的难度。针对这一问题，该文分析了该成像体制下的距离徙动特性并引入二次调频函数进行统一距离徙动校正；在方位向处理上则通过频域投影补偿调频率空变。与传统算法相比，新算法可对子孔径回波进行更有效的成像与聚焦，仿真结果证明了算法的正确性和有效性。
- 弹载SAR /
- 子孔径成像 /
- 2维加速度 /
- 方位频域投影
Abstract: In the missile borne subaperture SAR mode, the complicate motion of the platform and the strong coupling between range and azimuth present substantial difficulty for echo data processing. To solve this problem, the range migration characteristics of the echo are analyzed and a secondary frequency function is introduced for uniform migration correction. During the azimuth processing, the azimuth frequency domain projection is applied to compensating the Doppler frequency modulation variation. Compared with the traditional algorithm, this proposed algorithm can focus the echo more effectively. Simulation results show the correctness and validity of the proposed algorithm.
- Missile-borne SAR /
- Subaperture imaging /
- 2-D acceleration /
- Azimuth frequency domain projection

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参考文献(15)

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