Research on ISAR Imaging Based on Predesigned Waveform and Phase Cancellation Technique via Stepped-Frequency Signals

HU Jie-min; FU Yao-wen; LI Xiang; JING Ning

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Research on ISAR Imaging Based on Predesigned Waveform and Phase Cancellation Technique via Stepped-Frequency Signals

更新时间：2025-07-16

- Research on ISAR Imaging Based on Predesigned Waveform and Phase Cancellation Technique via Stepped-Frequency Signals
- Acta Electronica Sinica Vol. 39, Issue 7, Pages: 1575-1580(2011)
- 作者机构：
  
  1. 国防科技大学空间电子信息技术研究所,湖南,长沙,410073
  2. 国防科技大学电子科学与工程学院,湖南,长沙,410073
  3. 国防科技大学空间电子信息技术研究所湖南长沙,410073
  4. 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： TN95
- Published：2011
- 稿件说明：
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HU Jie-min, FU Yao-wen, LI Xiang, et al. Research on ISAR Imaging Based on Predesigned Waveform and Phase Cancellation Technique via Stepped-Frequency Signals[J]. Acta Electronica Sinica, 2011, 39(7): 1575-1580.
DOI：

HU Jie-min, FU Yao-wen, LI Xiang, et al. Research on ISAR Imaging Based on Predesigned Waveform and Phase Cancellation Technique via Stepped-Frequency Signals[J]. Acta Electronica Sinica, 2011, 39(7): 1575-1580. DOI：

摘要

针对步进频雷达系统

分析了目标匀加速运动对回波相位的调制效应

提出基于波形预先设计和相位对消技术组合的ISAR成像方法

该方法通过对脉冲重复时间的设计消除目标速度带来的相位高次项

并通过相位对消技术消除由目标加速度带来的相位高次项.因此对于匀加速运动的目标

算法不需要估计速度和加速度

减少了计算量.仿真试验演示了算法的性能

证明了算法的有效性.

Abstract

In the stepped-frequency radar system

motion introduces additive high order phase terms

which results in distortion of range profile.The phase modulation effect is analyzed and a novel ISAR imaging method is proposed for uniformly accelerative target

which based on predesigned waveform and phase cancellation.The pulse repetition time is predesigned to eliminate the high order phase terms introduced by velocity of the target.Then the high order phase terms introduced by acceleration are removed by phase cancellation.For a uniformly accelerative target

the velocity and acceleration are not need to estimate in the proposed method

so the computation burden is greatly reduced.Simulations with synthetic data demonstrate the performance of the new method.The results confirm its effectiveness.

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