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京津冀地区高分一号宽覆盖正射影像生成 预览 被引量:1

Ortho-rectification of GF-1 WFV Images in Beijing-Tianjin-Hebei Region
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摘要 针对高分一号宽覆盖1A级影像的大区域正射影像生成后,相邻影像接边精度不高的问题,提出利用数字高程模型(DEM)作为高程约束的平面区域网平差方法提高其对地目标定位精度。通过京津冀地区的高分一号宽覆盖影像的平面区域网平差并进行正射纠正试验,在GOTOPO30 DEM的支持下,采用的区域正射纠正方法和处理流程取得了较好的效果。 In response to the problem that edge matching accuracy is low when satellite images of GF-1 WFV(Wide Field View) level 1A are ortho-rectii ed one by one in large area, this paper proposed a plane block adjustment method that utilizing DEM as height constraint plane block adjustment method to improve the targeting precision of images.First, Rational Function Model(RFM) with affine transformation was selected as the mathematical model of the satellite image plane block adjustment. Second, to update the ground coordinates of Tie Points(TPs), the plane coordinates of TPs were only solved in the adjustment process. Elevation values were obtained using DEM interpolation.Finally, ortho-rectification was carried out using orientation parameters solved by plane adjustment. GF-1 WFV images in Beijing-Tianjin-Hebei Region were tested for plane block adjustment and ortho-rectification.Ultimately, the test results proved the effectiveness and feasibility of the plane block adjustment and ortho-rectification method by the support of GOTOPO30 DEM.
作者 秦绪文 汪韬阳 杜锦华 张过 QIN Xuwen;
出处 《地理空间信息》 2014年第5期119-121,共3页 Geospatial Information
基金 国家自然科学基金资助项目(41201361) 国家科技支撑计划资助项目(2012BAH28B04) 测绘地理信息公益性行业科研专项(201412007).
关键词 高分一号卫星影像 宽覆盖 平面区域网平差 正射纠正 接边精度 GF-1 satellite images,WFV,plane block adjustment,orthorectification,edge matching accuracy
作者简介 秦绪文。博士,副研究员,主要从事遥感地质项目的管理及科研工作。
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