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
IMPACT STUDY OF ATTITUDE AND PITCH MISALIGNMENT PARAMETERS ON FY-2 IMAGE NAVIGATION WITH SIMULATION METHOD
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摘要: 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。Abstract: Impact of attitude and pitch misalignment parameters on FY-2 image navigation is studied with simulation method. The simulation result indicates that the parameters 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 error diagnosis. Based on this and other simulation studies, an image navigation model is established, and the automatic operation of image navigation for FY-2 meteorological satellite is realized with high accuracy.
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Key words:
- Image navigation;
- Attitude;
- Misalignment;
- Simulation
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表 1 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结果
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[1] 陈渭民.夏浣清.陈光宇, 等.卫星气象学.北京:气象出版社, 1989. [2] Rao P K, 等编.气象卫星-系统、资料及其在环境中的应用.许健民等译.北京:气象出版社, 1994. [3] Hambrick L N, Phillips D R.Earth Locating Image Data of Spin Stabilized Geosynch ronous Satellites.NOAA Technical Memorandum NESS 111.1980. [4] SSEC.McIDAS Navigational Manual.University of Wisconsin-Madison.1986. [5] Carr J L.Automated and Robust Image Geometry Measu rement Techniques with Application to Meteorological satellite Imaging.Image Registration Workshop, NASA/GSFC, Washington, DC, USA, November 1997. [6] Kigawa S.A Mapping Method for VISSR Data.日本气象卫星技术报告第23号.1991. [7] Adamson J, Kerr G W, Jacobs G H P.Rectification quality assessment of meteosat images.ESA Journal, 1988, 12:(4). [8] 张守信.外弹道测量与卫星轨道测量基础.北京:国防工业出版社, 1992. [9] National Imagery and Mapping Agency.Department of Defense World Geodetic System 1984, Its Definition and Relationships with Local Geodetic Systems.Technical Report.NIMA TR8350.2 Third Edition Amendment 1, 2000.