Research on Goertzel Algorithm of LFMCW Laser Fuze Ranging

Abstract

Linear frequency modulated continuous wave(LFMCW) laser fuze ranging system needs to detect the intermediate frequency (IF) corresponding to the best detonating distance. This paper puts forward a method of Goertzel algorithm applied to the LFMCW laser fuze ranging system. By numerical simulation and comparison with the FFT algorithm we can see that the method applied to the LFMCW laser fuze ranging system can effectively achieves the detection of the difference frequency which contains distance information, and has good characters of real-time detection and easy project realization. The results show that the method applied to LFMCW laser fuze ranging system is reasonable and feasible.