| 基于TMS320F28335的雷达测速系统的设计 |
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| 引用本文： | 曹永敏,姚亚峰,陈海腾,李谋辉.基于TMS320F28335的雷达测速系统的设计[J].电子器件,2014,37(1). |
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| 作者姓名： | 曹永敏 姚亚峰 陈海腾 李谋辉 |
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| 作者单位： | 中国地质大学机械与电子信息学院; |
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| 基金项目： | 中央高校基本业务费专项基金项目(CUG120408) |
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| 摘 要： | 为了改善雷达测速仪触发相机的反应时间,提高测速精度,设计了一种以DSP芯片TMS320F28335为核心的雷达测速系统,通过DSP采集雷达信号,对车辆运动产生的多普勒频率进行复数傅里叶变换并进行频谱分析,利用目标相关算法自动检测超速目标,发送目标超速状态信息和及时的触发信号,触发图片采集设备抓拍到有效的图片。实验结果分析,触发相机反应时间大约90 ms,测速精度小于1 km/h。
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| 关 键 词： | 雷达测速 多普勒效应 目标相关 复数傅里叶变换 TMSF |
The Design of Radar Speed Measurement System Based On TMS320F28335 |
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| Abstract: | In order to improve the response time and the mearuring accuracy of the radar speed measurement, design a radar speed measurement system based on DSP-F28335. DSP acquire the radar signals, carry out complex fourier transform(CFFT) on Doppler frequency caused by vehicles movement, and then spectrum analysis. In the process of system operation, the system uses target-correlation algorithm to detect over speed vehicle automatically, sends the information of the over speeding and trigger signal to triggers image acquisition equipment to get useful photo. Analysis of experimental results, the response time is about 90 ms, speed measuring precision is less than 1 km/h. |
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| Keywords: | speed radar Doppler Effect target-correlation CFFT TMS320F28335 |
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