Accurate Velocity Measurement of High Speed Moving Target about Stepped-frequency Chirp Signal

YUAN Hao-tian; WEN Shu-liang; CHENG Zhen

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Accurate Velocity Measurement of High Speed Moving Target about Stepped-frequency Chirp Signal

更新时间：2025-07-16

- Accurate Velocity Measurement of High Speed Moving Target about Stepped-frequency Chirp Signal
- Acta Electronica Sinica Vol. 37, Issue 3, Pages: 649-653(2009)
- 作者机构：
  
  航天科工集团二院二十三所研发中心,北京,100854
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN958
- Published：2009
- 稿件说明：
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YUAN Hao-tian, WEN Shu-liang, CHENG Zhen. Accurate Velocity Measurement of High Speed Moving Target about Stepped-frequency Chirp Signal[J]. Acta Electronica Sinica, 2009, 37(3): 649-653.
DOI：

YUAN Hao-tian, WEN Shu-liang, CHENG Zhen. Accurate Velocity Measurement of High Speed Moving Target about Stepped-frequency Chirp Signal[J]. Acta Electronica Sinica, 2009, 37(3): 649-653. DOI：

摘要

针对调频步进信号高速运动目标径向速度影响合成距离像问题

提出一种复合测速方法.首先利用窄带跟踪距离的微分值对回波进行速度补偿和包络移动

其次对正正步进频率信号进行相关处理并构造跟踪回路以实现速度粗略估计和跟踪

然后再利用跟踪速度微分值补偿加速度

最后对正负步进频率信号进行相关处理

实现速度的精确测量.仿真结果证明了该方法的可行性.

Abstract

To solve the effect of the velocity on the range profile

a compound velocity measurement method for the stepped-frequency Chirp signal is presented.With the derivation of narrowband tracking ranges

velocity compensation and envelope migration are finished.Then with the correlation processing of the positive-positive stepped-frequency signals

and followed with the tracking loop

the velocity is coarse estimated and tracked.After that the acceleration is compensated with the tracking velocity derivation.At last with the correlation processing of positive-negative stepped frequency signals

the precise velocity is obtained.Simulation results prove the feasibility of the proposed method.

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Accurate Motion Estimation of High Speed Moving Target about Stepped-Frequency Chirp Signal

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Related Institution

School of Electronic Science and Engineering,National University of Defense Technology,,Hunnan

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