基于求导比值的调频连续波测距方法

发布时间：2018-01-17 15:29

本文关键词：基于求导比值的调频连续波测距方法　出处：《兵工学报》2014年05期 　论文类型：期刊论文

【摘要】：调频连续波(FMCW)引信具有低截获概率、高测距精度的优点,成为无线电引信领域研究热点。传统FMCW引信多采用谐波定距法,该方法存在与调制频偏成反比的固有误差;而近距离调频雷达中使用的补零快速傅里叶变换(FFT)法等频域方法,运算量较大,在低成本、低功耗常规武器引信中实现存在难度。针对该问题提出一种基于求导比值的调频测距时域分析方法,在不提高调制频偏的条件下降低测距误差,实现高精度定距,同时该方法具有运算量小、实时性高的优点,适合常规武器引信上使用。
[Abstract]:FM CW FMCW) fuze has the advantages of low probability of interception and high ranging accuracy, so it has become a hotspot in the field of radio fuze. The traditional FMCW fuze uses harmonic spacing method. The inherent error of this method is inversely proportional to the modulation frequency offset. In the short range frequency modulation radar, the zero-compensating fast Fourier transform (FFT) method with equal frequency domain has a large amount of computation and low cost. It is difficult to realize the low-power conventional weapon fuze. To solve this problem, a frequency-modulated ranging time domain analysis method based on the derivation ratio is proposed, which can reduce the ranging error without increasing the modulation frequency offset. At the same time, this method has the advantages of low computation and high real-time performance, and is suitable for use in conventional weapons fuze.
【作者单位】：北京理工大学机电学院;中国电子科技集团公司第29研究所;
【基金】：总装备部“十二五”预先研究项目(51305050103)
【分类号】：TN911.7
【正文快照】： 0引言调频连续波(FMCW)测距是通过发射频率受调制的等幅连续波信号,利用回波信号与发射信号的频率差,即差频中包含的目标距离信息来测距。现有无线电FMCW体制引信采用的谐波定距法存在与最大调制频偏成反比的固有测距误差,必须通过增大调制频偏才能减小[1-3]。对于调频引信,由

【共引文献】