【摘要】 简要介绍了遥感卫星轨道参数外推、传感器姿态和扫描侧视角精化的算法,分析了对国内某地区同一轨道上连续17景资源二号卫星影像进行外推对地目标定位的试验结果。在无地面控制点情况下,根据外推出的遥感卫星系统参数对单景影像实施几何纠正,当外推16景影像(深度达480km)时,对地目标定位精度不低于实地上的100m,明显好于利用卫星星历数据直接进行影像几何纠正的568m精度,从而验证了所建立外推模型的正确性和实用性。更多还原

【Abstract】 According to the orbital dynamical model and the kinematics model of satellite attitude, this paper developes an extrapolative location model. Testing the model on CBERS-2 high resolution satellite imageries of central China, when the depth of extrapolation is 480 km, the planimetric precision is 96.636 m including the measurement errors as well as the modeling error over than the 568 m which is the planimetric precision of systematic rectification. Thus, the validity of extrapolative location model is verified. The results show that the potential of using this model for rectifying other high resolution remote sensing imageries and object location on the condition of being short of ground control points.更多还原