FMCW Laser Fuze Multiple Scattering Model and Accurate Fixed-Distance Algorithm in a Smoke Environment

Chengtian Song; Ying Cui; Bohu Liu

doi:10.3390/s20092604

FMCW Laser Fuze Multiple Scattering Model and Accurate Fixed-Distance Algorithm in a Smoke Environment

Sensors (Basel). 2020 May 3;20(9):2604. doi: 10.3390/s20092604.

Authors

Chengtian Song¹, Ying Cui¹, Bohu Liu¹

Affiliation

¹ School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.

Abstract

In a smoke environment, suspended particles can scatter and absorb laser photons, making target echo signals extremely weak and difficult to extract and identify, which causes obvious difficulty in fixed-distance of laser fuze. In this paper, the multiple scattering model of frequency-modulated-continuous-wave (FMCW) laser fuze in a smoke environment was established. This model simulates multi-path propagation and multiple scattering of photons. At the same time, we use the correntropy spectral density (CSD) algorithm for accurate fixed-distance of FMCW laser fuze. The absolute error of distance does not exceed 0.15 m in smoke interference environment.

Keywords: CSD algorithm; FMCW laser fuze; accurate fixed-distance algorithm; multiple scattering; somke interference.