白天对空间目标进行观测时,采用光谱滤波技术可以提高光电系统的极限星等探测能力。针对光谱滤波探测特点,基于现有测量方法,结合光谱反射特性,分析了光谱滤波技术对测量精度的影响,给出了修正方法;利用光电系统对某空间目标进行了实际测量,根据事后修正方法进行了仿真研究,对实际测量值与事后修正值进行了比对分析。分析表明:光谱滤波技术虽然提高了光电系统的探测能力,但对测量精度带来了较大的影响,最大精度可为0.5等星。

The limit detecting magnitude of the electro-optical system can be improved through the spectral filtering technology in daytime space target observation. Considering the characteristic of the spectral filtering technology and the disagreement response of different spectrum wave band,based on the measurement method in exist,the precision of magnitude measurement caused by spectral filtering technology is analyzed,and the amend method is given. The magnitude of a space target is measured by an electro-optical system based on the measurement way in exist and the result is simulated through the amending method. At last,the two results is analyzed through comparing ways,which proved that spectral filtering technology can improve the detecting ability,but it would cause a big influence to the measuring precision,which can be 0.5 magnitude.