异源主被动遥感多视立体成像几何模型研究

项目名称： 异源主被动遥感多视立体成像几何模型研究

项目编号： No.61501036

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 李莹莹

作者单位： 北京市遥感信息研究所

项目金额： 19万元

中文摘要： 当前高分辨率航天遥感器的主要类型为CCD和SAR两种，大量立体成像研究仍基本集中在同源或同类型载荷像对的处理上。本项目将建立一套异源主被动多视遥感影像立体成像处理的理论模型和方法，将成像机理完全不同的、任意数目比例的、具有共同重叠区域的多幅CCD和SAR遥感影像数据纳入到统一的立体构像处理体系中。通过CCD和SAR不同遥感器的统一等效化几何建模、基于几何约束条件的异源多视同名点高精度自动匹配、立体成像模型合理化构建解算、以及全链路定位误差传播理论分析和精度评价等关键技术的攻克，最大程度地联合所有可以获取的主被动遥感数据，充分发挥CCD和SAR载荷的互补优势，摈弃传统同源立体对数据源的苛刻限制，同时确保立体构像产品的定位精度。最终通过大量不同观测组合数据条件下的试验验证，为本方案在高精度和高可靠性的目标区域三维信息快速获取等应用中提供完备的技术保障。

中文关键词： 立体成像；主被动遥感；异源多视；几何模型；误差传播

英文摘要： Presently CCD and SAR are two main space-borne hi-resolution remote sensors,and most stereo imaging research focused on homology stereoscopic pair of these sensors. This paper will present a heterogeneous multi-view stereo imaging scheme, which can incorporate any number CCD and SAR images with absolutely different mechanism and certain overlap area into a uniform stereo imaging process system. First different geometry models of CCD and SAR are transformed into a unified and equivalent model. Based on this, a heterogeneous multi-view stereo imaging model will be constructed and calculated. Then all link-road error propagation and accuracy assessment will be analyzed. All of these steps will unite any available active and passive remote sensing data together and give full play to complementary advantages of CCD and SAR, with the guarantee of positioning accuracy and without the harsh restrictions of traditional homology methods. At last large amounts of experiments will be realized based on different combination of imaging data. Through this it will be ensured that our scheme can be applied to high-accuracy and reliable three-dimensional information extraction over any target area.

英文关键词： Stereo imaging;active and passive remote sensing;heterogeneous multi-view;geometry model;error propagation