一种大加速度机动目标微动参数估计方法

李彦兵; 张曦文; 李飞; 陈大庆; 高红卫

doi:10.11999/JEIT160261

一种大加速度机动目标微动参数估计方法

doi: 10.11999/JEIT160261

1.
(北京无线电测量研究所北京 100854) ②(中国人民解放军驻航天二院二十三所军代表室北京 100854) ③(太原卫星发射中心试验技术部太原 030027)

基金项目:

国家自然科学基金(61271417)

计量
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- 被引次数: 0
出版历程
- 收稿日期: 2016-03-21
- 修回日期: 2016-07-28
- 刊出日期: 2017-01-19

Estimation of Micro-motion Feature for Large Accelerated Target

1.
(Beijing Institute of Radio Measurement, Beijing 100854, China)
2.
(PLA Representative office in No.23 Institute of the Second Academy of China Aerospace, Beijing 100854, China)

Funds:

The National Natural Science Foundation of China (61271417)

摘要

摘要: 运动目标具有大加速度时，在一定的观测时间内，其瞬时多普勒频率是模糊的。若目标存在微动，相应产生的微多普勒会叠加于模糊的多普勒频率之上。这种现象常见于高速机动目标。针对提取具有大加速度微动目标的运动特征问题，该文提出一种参数估计方法。通过对目标多普勒频率的解模糊以及对目标整体运动的估计和补偿，提取目标的微多普勒分量，在此基础上估计目标的微动周期。基于仿真数据和实测数据的分析表明，该方法适用于估计大加速度机动目标的微动参数问题。
- 机动目标 /
- 微多普勒 /
- 运动补偿 /
- 参数估计 /
- 解模糊
Abstract: In a certain observation time duration, the instantaneous frequency of motion target with large acceleration is ambiguous. This case is usually met in flexible-motion target with high velocity. If target has micro-motion, it will cause micro-Doppler modulation which adds in the ambiguous Doppler frequency. In order to extract micro-motion feature of large acceleration target, a parameter estimation method is proposed. Through the ambiguity resolution of Doppler frequency and the estimation and compensation of bulk motion of target, micro-Doppler extraction is achieved. And then, micro-motion period is estimated. Analysis based on simulation and measured data show that the method is suit for micro-motion parameter estimation of large acceleration flexible-motion target.
- Flexible-motion target; Micro-Doppler /
- Motion compensation /
- Parameter estimation /
- Ambiguity resolution /

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参考文献(27)

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