星载大比例尺测图双线阵立体测绘相机偏流角影响分析  

Influence analysis of the drift angle for space-borne large-scale bilinear array stereo mapping camera

作　　者：胡燕[1,2] 吕源 HU Yai;LV Yuan(Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,China;State Key Laboratory of Geo-Information Engineering,Xi'an 710054,China)

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘科学与工程》2020年第5期19-23,共5页Geomatics Science and Engineering

摘　　要：由于地球自转产生的偏流角会在大比例尺测图双线阵立体测绘相机的前、后视镜头像面上产生附加像移,导致TDICCD成像质量下降,进而影响摄影测量立体量测的精度。为此,本文通过阐述偏流角产生的原理,研究偏流角的变化规律,详细分析了偏流角对立体影像覆盖效率、摄影测量处理精度和TDICCD成像质量等方面的影响,并依据高精度立体测绘要求,提出了对偏流角控制和像移补偿的要求。The drift angle caused by Earth's rotation could generate additional image shift in front and back view images of the large-scale bilinear array stereo mapping camera,which results in the decline of TDICCD imaging quality,and influences the precision of photogrammetry stereo measurement.To solve this problem,the theory of drift angle generation is elaborated and the variation o£drift angle is studied.Then the effects of drift angle error on stereo image coverage efficiency,processing accuracy and imaging quality of TDICCD are analyzed in detail.The requirements for drift angle control and image shift compensation are put forward according to the need for high resolution stereo surveying and mapping.

关 键 词：偏流角 双线阵立体测绘相机 TDICCD 摄影测量处理 像移补偿 

分 类 号：P236[天文地球—摄影测量与遥感]