A New Method of Rapid Linearity Detection of LFMCW Radar

Abstract:

Linearity of VCO directly impacts on the range resolution of LFMCW radar, therefor, a linearity correction based on linearity detection is usually adoptted in practical applications. This paper proposes a new method of rapid linearity detection of LFMCW radar. First, estimate and correct the instantaneous phase. Then, fit a straight line for the instantaneous phase of difference frequency signal by least square approximation algorith. Finally, estimate the instantaneous Frequency-Modulation rate of FM signal. Simulation results show that the method is valid.

• Periodical: Applied Mechanics and Materials (Volumes 48-49)
• Pages: 88-91
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.48-49.88
• Online since: February 2011
• Authors: Yong Li Wang, Chun Han He, Kai Chun Ren, Xing Qi Zhang, Xiao Chun Zhang
• Keywords: Fitting a Straight Line, Instantaneous Phase, LFMCW Radar, Linearity Detection

References

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