Research on the scattering coefficient measurement method based on LFMCW

This paper researches the scattering coefficient (¿₀) measurement method based on LFMCW radar. The measurement mechanism of the relative calibration measurement method is introduced. Barrier effect and different window functions´ effect on the measurement precision is analyzed by simulation when processing the IF signal of the LFMCW radar digitally. An appropriate window function and the length of FFT is selected according to the requirement of measurement precision of the calibration object. The actual RCS of multiple scatters whose theoretical value is already known is obtained by simulation with the relative calibration method. The simulation results verify the scientificity and efficiency of the measurement method. Finally this method is applied to ¿₀ measurement of a crown.