一种新的弹载SAR高分辨成像方法

周鹏; 熊涛; 周松; 李亚超; 邢孟道

doi:10.3724/SP.J.1146.2010.00904

一种新的弹载SAR高分辨成像方法

doi: 10.3724/SP.J.1146.2010.00904

周鹏^{* 熊涛周松李亚超邢孟道,},
熊涛,
周松,
李亚超,
邢孟道

基金项目:

国家自然科学基金重大项目(60890072)和新世纪优秀人才支持计划(NCET-06-0861)资助课题

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- 被引次数: 0
出版历程
- 收稿日期: 2010-08-24
- 修回日期: 2010-11-25
- 刊出日期: 2011-03-19

A Novel High Resolution Imaging Method for the Missile-borne SAR

Zhou Peng^{* 熊涛周松李亚超邢孟道
,},
Xiong Tao,
Zhou Song,
Li Ya-Chao,
Xing Meng-Dao

摘要

摘要: 导弹在俯冲下降运动中飞行姿态变化较大、造成目标斜距表达式较为复杂，给弹载合成孔径雷达(SAR)成像算法提出了新的要求。针对这个问题，该文提出了一种新的弹载SAR成像方法，首先将目标斜距方程近似为慢时间的4阶近似式，再利用卡尔丹方程解得驻相点的精确解，进而得到信号的2维频谱表达式，然后以此为基础推导了相应的成像算法。最后，点目标仿真结果说明，与传统方法相比该文所提方法具有良好的成像效果，能够在导弹俯冲下降运动中实现全孔径高分辨成像。
- 弹载SAR /
- 卡尔丹方程 /
- 2维频谱
Abstract: Due to the variational flight path during the diving maneuver, the range function of the point target for the missile-borne SAR becomes complicated. Thus, a new imaging method is proposed in this paper. Firstly, the target range function is expanded to a quartic polynomial. Secondly, the stationary point is solved via the Cardanos formula, and then the tow-dimensional spectrum is obtained, based on which a new imaging algorithm is derived. Finally, the simulation result of the point targets shows that the algorithm proposed is effective to give a high resolution imagery with the entire aperture of the missile-borne SAR than the traditional method.
- Missile-borne SAR /
- Cardanos formula /
- Tow-dimensional spectrum

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参考文献(1)

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