资源三号测绘卫星传感器校正产品生产方法研究

目的 分析了资源三号测绘卫星影像产品的高精度要求和几何处理的关键问题,提出了基于虚拟TDI CCD阵列重成像技术的传感器校正产品生成方法。尤其针对多光谱影像4个谱段采用同一虚拟 TDI CCD,解决了谱段间几何配准问题。生产了河北安平地区三线阵及多光谱传感器校正产品,进行了平差实验和立体模型定向精度分析。利用传感器校正产品进行了数字表面模型(DSM)和数字正射影像(DOM)生产实验,并进行精度验证。结果表明,资源三号测绘卫星传感器校正产品的几何精度完全满足1∶5万立体测图要求。

)Research on a Production Method of Sensor CorrectedProducts for ZY-3 Satellite

Objective By analyzing the high accuracy requirements of ZY-3image products and the key problems ingeometric processing,this paper proposes a production method for SC images based on virtual TDICCD array imaging technology.This method can be used to solve the geometrical registration problemin 4-bands multi-spectral image especially,since these adopt the same virtual TDI CCD array.Datacovering the Anping district,Hebei province,was used to produce the three-linear array and SC prod-uct,and to carry out adjustment experiments and precision analysis of the stereo model orientation.Experimental production was implemented to produce digital elevation models and digital orthographymaps,as well verify the precision of the products.Experimental results show that the geometric pre-cision of the SC product performs very well in the stereo mapping of 1∶50 000scale products.