| 摘要: |
| 雷达发射波形的信号形式及其参数决定着目标微动特性获取的稳定性和可靠性。然而，当前的波形设计理论并不能满足目标微动特性获取对雷达信号的要求。针对该问题，本文建立了飞机目标桨叶回波调制特性的实用参数模型，并深入分析了桨叶调制信号的时域及频域特征，在此基础上，提出了面向微动特性获取的雷达波形设计方法，最后，根据所设计的一组“最优波形”参数，对直升机、螺旋桨飞机及喷气式飞机三类飞机目标微动特性获取可行性进行了详细的仿真、分析及验证，实验结果证明了本文方法的有效性。 |
| 关键词: 微动特性 波形设计 脉冲重复频率 脉冲宽度 雷达驻留时间 |
| DOI：DOI:10.3969/j.issn.1672-2337.2020.01.003 |
| 分类号:TN957 |
| 基金项目: |
|
| Radar Waveform Design for Micro Motion Feature Extraction |
|
XIA Peng，TIAN Xilan
|
|
1.The 38th Research Institute of China Electronics Technology Group Corporation，Hefei 230088，China;2.Key Laboratory of Aperture Array and Space Application，Hefei 230088，China
|
| Abstract: |
| The signal form and parameters of radar transmitting waveform determine the stability and reliability of target micro motion feature extraction. However，the current waveform design theory cannot meet the requirements of target micro motion extraction on radar signal. Aiming at this problem，a practical parameter model of airplane blade echo modulation is established in this paper，and the time and frequency domain characteristics of the blade modulation signal are analyzed in depth. On this foundation，a radar waveform design method for micro motion feature extraction is proposed. Finally，according to a set of optimal waveform parameters designed，the feasibility of extracting micro motion features of helicopter，propeller aircraft and jet aircraft is simulated，analyzed and verified in detail.The experimental results prove the effectiveness of this method. |
| Key words: micro motion feature waveform design pulse repetition frequency pulse width radar dwell time |
