Abstract
This paper presents a new method to realize high precision range and velocity measurement for linear frequency modulated continuous Wave (LFMCW) radar. By doing interpolation of intermediate frequency signal after FFT processing, the accuracy of range and velocity measurement can be improved. According to the principle of LFMCW radar range and velocity measurement, in order to improve range and velocity measurement accuracy, high precision frequency estimation of intermediate frequency signal of LFMCW radar is needed. Due to noise, clutter, sample rating and other factor, the peak of IF signal spectrum cannot accurately correspond to real frequency, this will cause a relatively large range and velocity measurement error and cannot meet the needs of LFMCW radar in unmanned driving, traffic monitoring and other field. Based on the analysis of two FFT spectral line interpolation, and combined with the characteristics of LFMCW radar range and velocity measurement, by moving the frequency of IF signal, the range and velocity measurement accuracy can be effectively improved. Simulation results verify the feasibility of the proposed method.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
