Improve the accuracy of radar level measurement frequency estimation algorithm

Linear Frequency Modulated Continuous Wave(LFMCW)radar level measurement system,the accurate estimation of the frequency of the echo signal level measurement is to achieve a critical step.Analysis of three spectral amplitude offset correction method and bilinear Improvement method of two frequencies in the frequency estimation algorithm estimates the advantages and disadvantages of the impact of noise on frequency estimation.Combines the advantages of both,proposed a way to improve the accuracy of radar level measurement frequency estimation precision optimization algorithm,matlab simulation experiments,the method of high accuracy,small amount of calculation,with a simple and fast real-time processing,etc.,and in the TMS320VC5509 Athe DSP signal processing chip to achieve the algorithm.