红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
12期
4100-4104
,共5页
同时偏振成像%偏振方位%校正
同時偏振成像%偏振方位%校正
동시편진성상%편진방위%교정
simultaneous polarization imaging%polarization orientation%calibration
同时偏振成像探测技术是近年发展起来的新型遥感探测技术，该技术采用分振幅方式，在同一个探测器上同时获得被探测目标0°、45°、90°、135°四个偏振方向的偏振强度图。这四个检偏方位受到仪器自身偏振效应、偏振器件误差和膜层的影响会发生偏离，为了保证偏振探测精度，对系统的四个检偏方位采用Equator- Poles定标和曲线拟合的方法进行校正，两种方法测量结果一致性在0.4%以内。线偏振度实测精度与理论分析精度都在2%以内，这验证了检偏方位校正的有效性。
同時偏振成像探測技術是近年髮展起來的新型遙感探測技術，該技術採用分振幅方式，在同一箇探測器上同時穫得被探測目標0°、45°、90°、135°四箇偏振方嚮的偏振彊度圖。這四箇檢偏方位受到儀器自身偏振效應、偏振器件誤差和膜層的影響會髮生偏離，為瞭保證偏振探測精度，對繫統的四箇檢偏方位採用Equator- Poles定標和麯線擬閤的方法進行校正，兩種方法測量結果一緻性在0.4%以內。線偏振度實測精度與理論分析精度都在2%以內，這驗證瞭檢偏方位校正的有效性。
동시편진성상탐측기술시근년발전기래적신형요감탐측기술，해기술채용분진폭방식，재동일개탐측기상동시획득피탐측목표0°、45°、90°、135°사개편진방향적편진강도도。저사개검편방위수도의기자신편진효응、편진기건오차화막층적영향회발생편리，위료보증편진탐측정도，대계통적사개검편방위채용Equator- Poles정표화곡선의합적방법진행교정，량충방법측량결과일치성재0.4%이내。선편진도실측정도여이론분석정도도재2%이내，저험증료검편방위교정적유효성。
The Simultaneous Imaging Polarimetry (SIP)is a new type of remote sensing detection technology. The imaging polarimetry architecture refered in the paper is Division of Amplitude, which can simultaneously obtain four polarization intensity images (in the orientation angle of 0,45,90 and 135 degree)of the same target on the same detector. Affected by self- polarization, error of polarization element and coating of the system, the orientation angle of polarization will be deviated. In order to ensure the polarization measurement accuracy, the orientation angle of polarization was calibrated using two methods (Equator- Poles calibration and curve fitting). Results show that the difference between these two methods is less than 0.4%, and degree of linear polarization (DOLP) accuracy of measurement and principle calculation is all within 2%, which prove the effect of the calibration.
