CAJ | 학술논문

根据遥感器的辐射定标方法和计算模型,对遥感器的辐射精度进行了分析.当假设遥感器观测地面目标、冷空间和星上黑体定标源都通过扫描镜成像时,扫描镜的热辐射以及仪器有背景辐射能量不会对辐射精度产生影响.影响遥感器辐射精度的主要因素是遥感器的信噪比、星上定标黑体的比辐射率误差、星上定标黑体的温度测量误差以及中心波长的漂移等因素.
근거요감기적복사정표방법화계산모형,대요감기적복사정도진행료분석.당가설요감기관측지면목표、랭공간화성상흑체정표원도통과소묘경성상시,소묘경적열복사이급의기유배경복사능량불회대복사정도산생영향.영향요감기복사정도적주요인소시요감기적신조비、성상정표흑체적비복사솔오차、성상정표흑체적온도측량오차이급중심파장적표이등인소.
According to calibration method and calibration alg orithm,the radiometric accuracy of space remote sensor for thermal emissive band is analyzed while the scan mirror is used to scan the Earth's surface,on-orbit calibration blackbody and cold space,the thermal radiance of the scan mirror an d the instrument background radiance have no influence on the radiometric accura cy.The main factors that contribute to the radiometric accuracy are the signal- noise ratio of remote sensor,the emissivity error and the temparature error of o n-orbit calibration blackbody,and the shift of the center wavelength.