微光夜视仪分辨力计算方程的修正

Correction on Resolution Calculation Formula for Low Light Level Night Vision Device

分析了微光夜视仪典型分辨力计算方程存在的缺陷,从参数单位取值、噪声功率因子、大气透过率、系统传函与空间频率的匹配等方面对该方程进行了修正,建立了更为完善和实用的分辨力计算方程。结合某通用微光夜视仪进行了分辨力估算,验证了经修正后的分辨力公式的实用性,对微光夜视仪分辨力计算有较好的指导意义。

Defects in typical resolution calculation formula for low light level night vision device are analyzed in this paper. Correction is carried out in parameter value, noise power factor, atmosphere transmissivity, adaption of transfer function and spatial frequency of system. A more completed and available resolution calculation function is put forward. The corrected resolution calculation formula has been validated by estimating resolution of low light level night vision device and it may play a guiding role in resolution calculation of low light level night vision device.