| 基于相位测距原理的汽车防撞雷达 |
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| 引用本文： | 张长会,牛忠荣.基于相位测距原理的汽车防撞雷达[J].合肥工业大学学报(自然科学版),2007,30(11):1509-1511. |
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| 作者姓名： | 张长会 牛忠荣 |
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| 作者单位： | 合肥工业大学,土木建筑工程学院,安徽,合肥,230009 |
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| 摘 要： | 文章将相位测距法用于解决汽车安全领域里的物体距离测量,对基于相位测距原理的雷达进行了理论分析。在样机研制过程中,较好地解决了雷达波单边带连续波双频发射和接收问题。基于雷达数据处理的实时性,对雷达信号采用DSP进行采集并作FFT运算,由FFT结果获得信号的相位差和物体的运动速度。实验证明,该雷达理论是可行的,具有一定的实用性。
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| 关 键 词： | 信号采集 数字信号处理 模数转换 汽车防撞雷达 快速傅里叶变换 |
| 文章编号： | 1003-5060(2007)11-1509-03 |
| 修稿时间： | 2006年11月20 |
Collision avoidance radar for the vehicles based on the theory of phase measurement |
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| ZHANG Chang-hui,NIU Zhong-rong.Collision avoidance radar for the vehicles based on the theory of phase measurement[J].Journal of Hefei University of Technology(Natural Science),2007,30(11):1509-1511. |
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| Authors: | ZHANG Chang-hui NIU Zhong-rong |
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| Abstract: | The theory of phase measurement is applied to determining the object distance in order to guarantee traffic safety.The collision avoidance radar for the vehicles which is based on the theory of phase measurement is analyzed theoretically,and the prototype radar is developed in which the continuous wave transmitter and receiver with two frequencies in a single band are designed.The advanced DSP technology and the FFT algorithm are adopted for radar signal sampling and processing in order to meet the need of real-time processing of radar data.The phase difference between two signals and the object speed are obtained based on the FFT data.The experiment results show that the presented method is feasible in both theory and practice. |
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| Keywords: | signal sampling DSP A/D collision avoidance radar for vehicles FFT |
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