Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling

YANG Feng-feng; WANG Min; LIANG Dian-nong

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Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling

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- Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling
- Acta Electronica Sinica Vol. 35, Issue 9, Pages: 1754-1756(2007)
- 作者机构：
  
  国防科技大学电子科学与工程学院,湖南,长沙,410073
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957
- Published：2007
- 稿件说明：
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YANG Feng-feng, WANG Min, LIANG Dian-nong. Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling[J]. Acta Electronica Sinica, 2007, 35(9): 1754-1756.
DOI：

YANG Feng-feng, WANG Min, LIANG Dian-nong. Small Satellite Multi-Channel SAR Unambiguous Imaging Based on Nonuniform Sampling[J]. Acta Electronica Sinica, 2007, 35(9): 1754-1756. DOI：

摘要

当小卫星天线不满足最小天线面积约束时

则出现距离或者方位模糊

无模糊的高分辨成像是小卫星SAR成像处理的关键.本文提出利用分布式小卫星或者小卫星天线的多通道回波数据

在满足广义采样定理的条件下通过插值恢复出无模糊的全方位带宽信号

实现高分辨成像.实验证明

该算法具有操作简单

运算效率高的优点.

Abstract

Small satellite radar dissatisfies the minimum antenna area constraint.Unambiguous SAR imaging of a wide ground area with high azimuth resolution is a contradiction.Under the generalized sampling theorems

nonuniform samples of multiple receiving channels uniquely determine the unambiguous wide bandwidth-limitd signal.A fine resolution unambiguous SAR image can acquired with interpolation.Compared with the array signal processing algorithm for the same purpose

the interpolation algorithm operates more easy and efficiently with high performance.

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