摘要
线阵CCD传感器在航天摄影测量中已获得了广泛的应用,但卫星发射上天后由于多种因素,CCD、镜头的各项参数均发生了变化,原来实验室里标定的值将不再适用。此时卫星遥感影像目标定位必须顾及像点的实际偏差,否则将对定位精度产生很大的影响。本文构建了带有内方位参数的严密成像模型。并通过模拟试验证明了单像空间后方交会和自检校区域网平差定标的可行性。
Line-array CCD sensors have a widespread application in space photogrammetry.But the parameters of CCD and mirror have changed because of multiplicate factors after the satellite launching in the space.The calibration value in the laboratory will be suitable no longer.Now the localization of satellite image must take into account the actual deviation of the image points.Otherwise it will have a very tremendous influence to the pointing accuracy.This article constructs the strict geometric model which have the inner orientation parameters,proves the feasibility of single image＇s calibration in the situation of accurate dense density control points.
出处
《测绘与空间地理信息》
2011年第1期171-173,共3页
Geomatics & Spatial Information Technology
关键词
线阵CCD
空间后方交会
自检校区域网平差
定标
line-array CCD
space resection
self-calibrating block adjustment
calibration
