| 脉冲多普勒雷达信号处理机中CFAR检测的仿真研究 |
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| 引用本文： | 胡航.脉冲多普勒雷达信号处理机中CFAR检测的仿真研究[J].火控雷达技术,2005,34(3):42-45,57. |
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| 作者姓名： | 胡航 |
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| 作者单位： | 哈尔滨工业大学,哈尔滨,150001 |
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| 摘 要： | CFAR检测器是雷达信号处理机中的重要组成部分。本文对脉冲多普勒雷达信号处理机中的CFAR检测器进行了仿真研究。给出了信号处理机中CFAR检测器的设计方案，对邻近单元平均恒虚警处理中的虚警概率、发现概率和恒虚警处理损失等问题进行了研究。分析了有限的参考单元数对虚警性能的影响，并给出了修正的门限系数。得出了不同参考单元数下的恒虚警损失，及恒虚警损失与相对门限系数之间的关系。得到了一定发现概率下所要求的信号处理机的输入信噪比。研究了信号处理机中其它部分对恒虚警处理性能的影响，如脉冲压缩对虚警率的影响等。
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| 关 键 词： | 恒虚警检测 仿真 虚警概率 门限系数 恒虚警损失 |
| 文章编号： | 1008-8652（2005）03-042-004 |
| 收稿时间： | 2004-11-29 |
| 修稿时间： | 2004-11-29 |
Simulation Study on CFAR Detection in Pulse Doppler Radar Processor |
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| Hu Hang.Simulation Study on CFAR Detection in Pulse Doppler Radar Processor[J].Fire Control Radar Technology,2005,34(3):42-45,57. |
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| Authors: | Hu Hang |
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| Abstract: | CFAR detector is an important part of radar processor. This paper studies and simulates the CFAR detection in pulse Doppler radar processor. It presents a scheme of realization for the CFAR detector in processor. To cell averaging CFAR, the paper studies the questions on the false alarm probability, discovery probability and CFAR loss etc. The influence of finite range cells on false alarm performance is also analyzed and the modified threshold coefficients are given. The CFAR loss under different amount of range cells, the relation of the CFAR loss and the relative threshold coefficients and processor input SNR for a certain discovery probability are obtained. Additionally, the influence of the other parts of the processor on performance of CFAR processing, such as the influence of pulse compression on false alarm probability and etc. are studied. |
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| Keywords: | CFAR detection simulation false alarm probability threshold coefficients CFAR loss |
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