CAJ | 학술논문

为了提高立体摄影测量的精度，对航天三线阵光学遥感成像的运动模糊模型进行推导和分析。根据引起运动模糊的方式，将三线阵光学遥感成像运动模糊分为前向运动模糊和姿态运动模糊。利用坐标系旋转来研究三线阵相机曝光瞬间前向飞行和姿态变化对运动模糊的影响，对俯仰、滚转和偏航姿态运动引起的模糊分别进行建模。仿真实验表明：（1）曝光瞬间航天三线阵遥感成像运动模糊是空间变化的，俯仰和滚转比偏航运动对三线阵相机的影响更严重；（2）对于直视线阵CCD而言，偏航引起的运动模糊可以忽略不计，但是对前视和后视线阵CCD的影响不能忽略；（3）航天三线阵相机的前视和后视线阵CCD比直视线阵CCD更容易受到航天器姿态运动的影响。
위료제고입체섭영측량적정도，대항천삼선진광학요감성상적운동모호모형진행추도화분석。근거인기운동모호적방식，장삼선진광학요감성상운동모호분위전향운동모호화자태운동모호。이용좌표계선전래연구삼선진상궤폭광순간전향비행화자태변화대운동모호적영향，대부앙、곤전화편항자태운동인기적모호분별진행건모。방진실험표명：（1）폭광순간항천삼선진요감성상운동모호시공간변화적，부앙화곤전비편항운동대삼선진상궤적영향경엄중；（2）대우직시선진CCD이언，편항인기적운동모호가이홀략불계，단시대전시화후시선진CCD적영향불능홀략；（3）항천삼선진상궤적전시화후시선진CCD비직시선진CCD경용역수도항천기자태운동적영향。
In order to improve the accuracy of stereophotogrammetry,a computational model of motion blur is estab-lished for spaceborne TLA cameras. According to the reasons of motion blur,it is divided into two parts:the motion blur caused by flight velocity and attitude instability. The effect of flight velocity and attitude instability on motion blur at the camera exposure is studied by coordinate transformation. The motion blur caused by pitching,rolling and yawing is mathematically modeled. The experimental results show the conclusions as follows:(1 )motion blur of spa-ceborne TLA cameras is variant in space,pitching and rolling have more effect on motion blur of TLA cameras than yawing;(2)for nadir-looking sensor,the motion blur caused by yawing is ignored,but for forward-looking and back-ward-looking sensors,it can′t be ignored because it introduces space variant to the motion blur distribution on the CCD arrays;(3)the motion blur caused by attitude instability is smaller to the nadir-looking sensor than the forward-loo-king and backward-looking sensors.