This paper investigates the approach to estimate the maximum detection range of an infrared point-target against sky background based on the minimum resolved contrast ( mrc ) criteria 摘要基于最小分辨對(duì)比度準(zhǔn)則,研究了天空背景下紅外點(diǎn)目標(biāo)的最大探測距離估計(jì)方法。