资源三号卫星三线阵CCD影像自检校光束法平差  

Self-Calibration Block Adjustment for ZiYuan-3 Triple Linear CCD Imagery

作　　者：王涛[1] 张艳[1] 张永生[1] 范大昭[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《测绘科学技术学报》2014年第1期44-48,52,共6页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41101396;41001262);国家863计划重点项目(2012AA12A302-5);地理信息工程国家重点实验室开放基金项目(SKLGIE2013-M-3-4)

摘　　要：本文将自检校光束法区域网平差技术用于资源三号卫星三线阵CCD影像的精确定位处理中。根据传感器成像特点,分析设置了ZY-3 TLC影像坐标系统误差自检校附加参数模型,在将轨道姿态数据转换为外方位元素后,通过合理设置变化模型将其引入光束法平差中,构建了自检校光束法平差模型。利用嵩山实验场地区ZY-3 TLC影像及辅助数据,通过常规和自检校光束法平差,对不同平差模型、不同控制点数量对定位精度的影响进行了实验和评估。结果表明所用ZY-3 TLC影像经常规平差后存在较为明显的系统误差,可以通过设置合适的附加参数利用自检校光束法区域网平差进行有效补偿,显著提高定位精度。The self-calibration bundle block adjustment is applied to the ZiYuan-3 triple linear CCD（ ZY-3 TLC） imagery precise positioning processing in the paper. Upon the imaging properties of the TLC sensor, the suitable ZY-3 TLC image coordinates self-calibration parameter model is built up firstly, and then exterior orientation elements are extracted out from orbit and attitude data and adopted into the subsequent block adjustment by setting the reasonable exterior changing model, finally the self-calibration block adjustment model is set up. The normal block adjustment and the self-calibration block adjustment tests are carried out using the ZY-3 TLC imagery and auxiliary data around Songshan test-site. Analysis and assessment are made upon the various factors influencing the positioning accuracy, such as the different adjustment models and different number of control points. Experimental results prove that there exists obvious system error in ZY-3 TLC image positioning after normal block adjustment and the self-calibration block adjustment technique can efficiently compensate this system error and significantly enhance the positioning accuracy by taking reasonable additional parameters.

关 键 词：资源三号卫星 自检校 光束法区域网平差 系统误差 附加参数模型 

分 类 号：P237[天文地球—摄影测量与遥感]