Study on three-dimensional imaging algorithm for airborne forward-looking SAR

被引：0
|
作者：
Ren X.-Z. [1 ,2 ]
Yang R.-L. [1 ]
机构：
[1] The Institute of Electronics, Chinese Academy of Sciences
[2] The Graduate University, Chinese Academy of the Sciences
来源：
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2010年 / 32卷 / 06期
关键词：
Antenna array; Forward-looking; Range-Doppler; SAR; Three-dimensional imaging;
D O I：
10.3724/SP.J.1146.2009.00734
中图分类号：
学科分类号：
摘要：
In this paper, an innovative airborne forward-looking SAR system using antenna array is studied, and a new three-dimensional imaging algorithm is proposed for airborne forward-looking SAR based on the image geometry and the characteristic of echo signal. A single SAR image was obtained with chirp scaling algorithm until all the receiving antennas have received echoes once. When plane flies along the track continuously, a sequence of two-dimensional SAR images in front of the flight path can be obtained. Then the three-dimensional image of forward-looking SAR can be obtained by focusing one section at an azimuth position one time with Range-Doppler algorithm until all the sections have been processed. Raw data of forward-looking SAR in X-band is simulated and three-dimensional image is achieved. The imaging result is analyzed, and simulation results confirm the validity of the proposed algorithm.
引用
收藏
页码：1361 / 1365
页数：4
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