CAJ | 학술논문

为了分析不同探测环境对卫星红外探测的影响，推导了倾斜探测路径下目标与背景在探测器入瞳处的辐照度对比度计算公式。计算了目标在海天背景下不同温度、不同高度、不同太阳天顶角、不同探测天顶角条件下，目标与背景在0.75～14?m波段的红外单色辐射照度对比度。分析指出：太阳天顶角对红外探测的影响主要在2.7?m以下波段，探测波长大于2.7?m可不考虑太阳的影响。目标在5 km以下、探测天顶角在60?以上继续增加时，探测波段变窄，不可探频段增宽；目标在10 km 以上，探测天顶角变化对探测影响很小。这些结论可用于指导卫星红外探测波段选择与探测结果分析。
위료분석불동탐측배경대위성홍외탐측적영향，추도료경사탐측로경하목표여배경재탐측기입동처적복조도대비도계산공식。계산료목표재해천배경하불동온도、불동고도、불동태양천정각、불동탐측천정각조건하，목표여배경재0.75～14?m파단적홍외단색복사조도대비도。분석지출：태양천정각대홍외탐측적영향주요재2.7?m이하파단，탐측파장대우2.7?m가불고필태양적영향。목표재5 km이하、탐측천정각재60?이상계속증가시，탐측파단변착，불가탐빈단증관；목표재10 km 이상，탐측천정각변화대탐측영향흔소。저사결론가용우지도위성홍외탐측파단선택여탐측결과분석。
In order to analyze the effect of various detective situations on the satellite-borne infrared detection, the irradiance contrast formula of target and background at the satellite-borne infrared detector under acclivous detective path is derived. If the target is in both sea and atmosphere backgrounds, the monochrome irradiance contrast of the target and the background at 0.75-14?m waveband is calculated with the target at various temperatures and altitudes under various detective zenith angles and various solar zenith angles. The analysis conclusions are as follows:the effect of the solar zenith angle is mainly within the wavebands shorter than the wavelength of 2.7?m, and it can be ignored when the wavelength is longer than 2.7?m. When the target altitude is lower than 5 km and the detective zenith angle is above 60?and keeps on increasing, the optimum detective wavebands narrow down and the un-detective wavebands widen. When the target altitude is higher than 10 km, the effect of the detective zenith angle is small for infrared detection. These conclusions can be used to guide the satellite-borne infrared detective waveband selection and the result analysis.