| 基于FM信号的无源雷达数据采集系统设计 |
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| 引用本文： | 万红,李申堂,王志刚.基于FM信号的无源雷达数据采集系统设计[J].系统工程与电子技术,2006,28(2):175-176. |
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| 作者姓名： | 万红 李申堂 王志刚 |
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| 作者单位： | 1. 解放军信息工程大学,河南,郑州,450002;郑州大学,河南,郑州,450002
2. 解放军信息工程大学,河南,郑州,450002 |
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| 基金项目： | 攀登工程项目(BP200406029)，河南省骨干教师基金资助课题 |
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| 摘 要： | 基于FM信号的无源雷达目标回波信号信杂比低,频带窄,只有开发大动态范围的接收机才有可能接收到微弱的目标散射信号。在分析接收系统数据采集方案和不同采样速率对数据采集有效位影响的基础上,采用中频过采样技术采集数据,提出选用PCI-9820采集卡的数据采集方案,其动态范围大于75 dB。应用该数据采集方案已成功检测到空中飞行目标。对低信杂比下雷达回波信号检测有一定的参考价值。
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| 关 键 词： | 无源雷达 数据采集 信噪比 |
| 文章编号： | 1001-506X(2006)02-0175-02 |
| 修稿时间： | 2005年1月11日 |
Design of the data acquisition system for the passive radar based on FM signal |
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| WAN Hong,LI Shen-tang,WANG Zhi-gang.Design of the data acquisition system for the passive radar based on FM signal[J].System Engineering and Electronics,2006,28(2):175-176. |
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| Authors: | WAN Hong LI Shen-tang WANG Zhi-gang |
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| Abstract: | The target echo of passive radar based on FM signal has the characteristics of low SCR and narrow band.Only the receiver with large dynamic range can receive the weak echo signal.The data acquisition design for the receiver is discussed and the influence of different sampling rates on the significant digit of ADC is analyzed.The IF oversampling technique and PCI-9820 acquisition card are adopted.The dynamic range of the receiver is larger than(75 dB.) A flying target is detected with the proposed scheme and it is helpful for detecting a weak radar echo signal. |
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| Keywords: | passive radar data acquisition SNR |
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