Analysis and correction of LRCS measurement error under non-ideal conditions

In order to improve the measurement accuracy of laser radar cross section (LRCS) and to avoid the measurement error of LRCS because of the instability of laser energy and atmospheric conditions, multi-channel comparison measurement method was adopted. New equation and calculation expressions were deduced for LRCS. The applicability and limitation of traditional LRCS measurement were discussed. The influence of laser energy instability and random atmospheric fluctuation on LRCS testing was analyzed. The results of two measurement methods were analyzed and compared. The test shows that the new method is more feasible than the traditional method. The measurement results of LRCS by multi-channel comparison are more accurate and could avoid and decrease the measurement error induced by laser energy instability and random atmospheric fluctuation.