| 摘要: |
| 认知雷达是下一代雷达发展的方向之一。在对认知跟踪反馈环进行分析的基础上，提出了一种线性调频(LFM)信号波形库的建立方法。在应用交互多模型跟踪机动目标的背景下，通过所建的波形库对发射波形进行实时调用，达到减小跟踪误差的目的。研究了具有不同调频率参数与FrFT旋转角度组合的不同数量LFM信号波形库的建立，以最小化模型选择不确定性为目的推导波形选择准则，得到了不同的波形选择策略。仿真验证分析其跟踪精度可以看出，构建具有一定数量LFM波形的波形库可以提高认知跟踪雷达的性能。 |
| 关键词: 认知雷达 认知跟踪雷达 机动目标跟踪 交互多模型 LFM波形库 波形选择 |
| DOI： |
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| 基金项目: |
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| A method for constructing LFM-waveform library in cognitive tracking radar application |
| YU Dao-bin,WU Yan-hong,ZHU Wei-gang |
| () |
| Abstract: |
| Cognitive radar is one of the main trend in radar′s development. A method of building a LFM-waveform library is proposed on the basis of analyzing the feedback in cognitive tracking loop. By applying the interact multiple model (IMM) algorithm in tracking maneuvering target, waveforms in the library are called timely so as to reduce tracking errors. Waveforms library is built by different combinations of chirp parameters and FrFT rotating angles, the waveform selecting rule is derived through the principle of minimum model′s uncertainty, and different selection strategies are obtained. Through analyzing the precision of tracking,the conclusion is drawn that the library of certain amount LFM-waveforms can improve the property of cognitive tracking radar. |
| Key words: cognitive radar cognitive tracking radar maneuvering target tracking interact multiple model LFM-waveform library waveform selection |
