风云二号气象卫星姿态和沿步进方向失配角参数对图像影响的模拟研究

用模拟的方法研究了卫星姿态、沿步进方向失配角参数对风云二号气象卫星图像定位影响及其随时间的变化规律。模拟结果表明, 参数偏差对图像定位的影响有很强的规律性; 参数的偏差将导致图像网格失真和图像定位不准; 不同参数对卫星图像定位的影响不同。由模拟生成的典型误差图像为风云二号高精度图像定位模型的建立和图像定位误差分析提供了依据。

Impact Study of Attitude and Pitch Misalignment Parameters on FY-2 Image Navigation with Simulation Method

Impact of attitude and pitch misalignment parameters on FY-2 image navigation is studied with simulation method. The simulation result indicates that the paramet e rs affect navigation result orderly; inappropriate parameter assignment will not only result in image displacement but also cause image distortion; different parameters affect image navigation in different ways. Parameters simulated also result in a series of typical images, that is very useful in image navigation e rr or diagnosis. Based on this and other simulation studies, an image navigation mo del is established, and the automatic operation of image navigation for FY-2 me teorological satellite is realized with high accuracy.