The Bistatic SAR Imaging Algorithm Based on the Slanting Flight Mode

PENG Sui-yang; ZHANG Jun; SHEN Zhen-kang

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The Bistatic SAR Imaging Algorithm Based on the Slanting Flight Mode

更新时间：2025-07-16

- The Bistatic SAR Imaging Algorithm Based on the Slanting Flight Mode
- Acta Electronica Sinica Vol. 39, Issue 9, Pages: 1967-1974(2011)
- 作者机构：
  
  国防科技大学电子科学与工程学院ATR实验室,湖南,长沙,410073
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957.52
- Published：2011
- 稿件说明：
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PENG Sui-yang, ZHANG Jun, SHEN Zhen-kang. The Bistatic SAR Imaging Algorithm Based on the Slanting Flight Mode[J]. Acta Electronica Sinica, 2011, 39(9): 1967-1974.
DOI：

PENG Sui-yang, ZHANG Jun, SHEN Zhen-kang. The Bistatic SAR Imaging Algorithm Based on the Slanting Flight Mode[J]. Acta Electronica Sinica, 2011, 39(9): 1967-1974. DOI：

摘要

斜飞模式双基地SAR系统配置灵活

具有广阔的应用前景.但由于收发平台存在距离向的运动

瞬时斜距方程非常复杂

运动补偿也更困难.本文通过分析斜飞模式下的几何构形

阐述了斜飞模式下距离向运动补偿的基本原理

并设计了两种运动补偿方法——泰勒近似法和模型近似法.然后通过对距离向偏移补偿后的回波分析

完整的推导了基于时域距离走动的双基地SAR成像算法.仿真实验表明模型近似法运动补偿的效果要优于泰勒一阶近似法

与泰勒二阶近似法相当

并验证了本文方法对斜飞模式双基地SAR成像的有效性.

Abstract

The slanting flight mode bistatic SAR system has a flexible configuration and broad application prospects.However

because of the transceiver platform's movement in the range direction

the equation of instantaneous slant range gets very complex

and motion compensation also becomes rather difficult.Through an analysis of squint flight mode geometries

the thesis expounds the keystone of motion compensation in the range domain on slant flight mode

and presents two methods of motion compensation-the taylor approximation method and model approximation method.Then through analyzing the echo which has compensated the deviation in the range domain

the bistatic SAR Algorithm with range walk correction in time domain is conducted completely.Simulation results show that the motion compensation model approximation method is superior to the first-order taylor approximation method

and is equal to the second-order taylor approximation method

as well as verify the effectiveness of the method of slanting flight mode bistatic SAR imaging.

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