| 提高线性调频连续波雷达测距精度的ZFFT算法 |
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| 引用本文： | 张红,王晓红,郭昕.提高线性调频连续波雷达测距精度的ZFFT算法[J].航天电子对抗,2006,22(1):48-51. |
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| 作者姓名： | 张红 王晓红 郭昕 |
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| 作者单位： | 北京理工大学电子工程系,北京,100081 |
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| 摘 要： | 线性调频连续波(LFMCW)雷达在理论上有很高的测距精度,然而在实际系统中,由于FFT变换的栅栏效应,使得其距离分辨力和测距精度处于同一数量级,满足不了近距离测距时高精度的要求。在传统的FFT处理的基础上,采用ZFFT算法,在运算量增加不多的情况下,完成对中频回波主瓣的局部细化,大大提高了LFMCW雷达的测距精度,以满足高精度测距的要求。
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| 关 键 词： | 雷达 测距 |
| 修稿时间： | 2005年7月6日 |
Improving range measuring precision of LFMCW radar using ZFFT method |
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| Zhang Hong,Wang Xiaohong,Guo Xin.Improving range measuring precision of LFMCW radar using ZFFT method[J].Aerospace Electronic Warfare,2006,22(1):48-51. |
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| Authors: | Zhang Hong Wang Xiaohong Guo Xin |
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| Abstract: | The Linear Frequency Modulated Continuous Wave(L FM CW) Radar has high theoretical range measuring precision.But its practical range precision is of the same magnitude as the range resolution because of the inher ent frequency space of FFT,which can not satisfy the high precision requirement for the near range measuring.ZFFT method is adopted to reduce frequency space of the main lobe of echo range spectrum on the FFT with increasing less operation.This method can greatly improve the range precision of LFMCW radar and satisfy t he practical needs of high precision radar rang measuring. |
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| Keywords: | LFMCW ZFFT |
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