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改进S/DB提高FY-2A云图配准精度的方法

周加峰   

  1. 国家卫星气象中心!北京100081
  • 发布日期:2000-02-25

Modifying S/DB to Improve the Image Matching Precision of the FY-2A Satellite

Zhou Jiafeng (National Satellite Meteorological Center,Beijing 100081)   

  • Published:2000-02-25

摘要: 针对FY- 2A 卫星因扫描辐射计步进引起卫星自旋周期变化从而造成图像精度恶化问题, 根据扫描辐射计的运动规律, 提出地面同步与数据缓冲系统 (S/DB) 预先补偿系统误差的解决方法; 增强了S/DB的跟踪水平, 使卫星图像的配准精度提高了近三倍, 达到了国外先进卫星的水平, 实际应用效果良好。

关键词: 图像匹配, 同步与数据缓冲系统, 扫描辐射计

Abstract: The stepping of the VISSR of the FY-2A Meteorological Satellite changes its spin period.As a result,the image matching precision is deteriorated.Based on the movement rule of the VISSR,this paper presents a method to balance the system error in advance by modifying S/DB (Synchronizer/Data Buffer),which can improve the image matching precision trebly and hence intensify the tracking function of S/DB,reaching the international level of the advanced geostationary satellites.This technique is effective in application.