CAJ | 학술논문

信噪比(SNR)作为评价遥感系统探测能力的一项关键指标，反映了遥感系统的灵敏度。信噪比的不确定度反映了仪器满足测量需求的信度水平。通过对航空多角度偏振辐射计(AMPR)工作原理的分析及其观测Stokes矢量与偏振度信噪比的讨论，提出了AMPR信噪比的不确定度数学模型。基于该模型，利用积分球对AMPR信噪比不确定度进行实验室验证。验证结果表明，当探测偏振度大于1%或2%时，AMPR信噪比不确定度分别不超过10%或5%(1σ)。
신조비(SNR)작위평개요감계통탐측능력적일항관건지표，반영료요감계통적령민도。신조비적불학정도반영료의기만족측량수구적신도수평。통과대항공다각도편진복사계(AMPR)공작원리적분석급기관측Stokes시량여편진도신조비적토론，제출료AMPR신조비적불학정도수학모형。기우해모형，이용적분구대AMPR신조비불학정도진행실험실험증。험증결과표명，당탐측편진도대우1%혹2%시，AMPR신조비불학정도분별불초과10%혹5%(1σ)。
Signal-to-noise ratio (SNR) is a key parameter to evaluate the detection performance for a remote sensing system. A mathematical model to estimate the SNR uncertainty for aviation multi-angular polarimetric radiometer (AMPR) is proposed through analyzing the working principle of AMPR and discussing the SNRs of measured Stokes vectors and degree of polarization. Based on the proposed model, the AMPR SNR uncertainty has been validated in laboratory by using integrating sphere source. The experiment results indicate that the SNR uncertainty of AMPR is no more than 10% or 5% (1σ) for the degree of polarization less than 1% or 2%, respectively.