高分一号卫星影像海岸带区域定位精度评价  

Positioning Precision Evaluation of GF-1 in the Coastal Zone

作　　者：吴培强[1] 张杰[1] 马毅[1] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋测绘》2015年第4期63-66,共4页Hydrographic Surveying and Charting

基　　金：国家海洋局青年海洋科学基金(2013441);国家海洋局第一海洋研究所基本科研业务费专项(2013G21)

摘　　要：以覆盖黄河三角洲和连云港区域的两景高分一号卫星遥感影像1A级产品为例,利用现场采集的地面控制点和1∶50 000的DEM产品,开展了影像自主定位和正射校正实验,制作了控制点偏移矢量图,并对影像的定位精度进行了分析。结果表明:高分一号卫星影像具有较好的自主定位精度,黄河三角洲区域影像定位精度在27.8m左右,连云港区域影像定位精度在53.8m左右;在单控制点的情况下,影像的定位精度在3m左右,最大偏移量约为6m;在多控制点下正射校正,影像的定位精度为1m左右,最大偏移量为1个像元;对比控制点偏移矢量图,检查点较影像同名点的偏移方向与大小基本一致,表明高分一号卫星影像内部刚性较好。Taking the first product of GF-1 of the Yellow River delta and Lianyungang of Jiangsu provence as an example, we used high accuracy GPS points as ground control points and national 1 ： 50000 DEM products to develop the autonomous positioning and orthocorrection experiments. We produced the map of location offset vector,and evaluated the image position precision. The results showed that the image had better autonomous positioning precision,of about 27.8m in Yellow River delta and 53.8m in Lianyungang.In the case of single point of control, the positioning precision of image was about 3m, the maximum offset was about 6m. The positioning accuracy of the image was about lm, and the maximum offset was less than a pixel in the multi- control point orthocorrection.Contrasting the control point offset vector map, the offset direction and size were consistent with the checkpoint of the image, which could be found the image rigidity better.

关 键 词：遥感 高分一号 海岸带 定位精度 正射校正 GF-1 

分 类 号：P237[天文地球—摄影测量与遥感]