合成孔径雷达及其干涉技术研究进展

合成孔径雷达(Synthetic aperturer adar，SAR)能够在全天候、全天时条件下对地面进行大范围测绘，是现代民用遥感和军事侦察中的重要手段。本文回顾了SAR及干涉合成孔径雷达(InSAR)技术的历史，叙述了SAR由非聚焦到完全聚焦，由光学处理到全数字式处理，由二维测绘到干涉三维测绘的发展历程。通过例举典型系统，介绍了国外机载、空载SAR和InSAR技术的现状，并对我国近年来在该领域取得的进展作了简要介绍。最后，本文给出对SIR—C／X—SAR采集的航天飞机SAR数据处理所得到的成像结果。

Progress in Synthetic Aperture Radar and Its Interferometric Technology

Synthetic aperture radar (SAR) provides the all-weather, day/night capability in imaging the terrain features, and it is the major power in the fields of both civil remote sensing and military reconnaissance in modern time. This paper takes a review on the development of SAR and its interferometric (InSAR) technology. The historic milestones of SAR development from unfocused to focused, from optical to digital processing, from 2-D to 3-D interferometric mapping are respectively described. The state-of-the-art of airborne and spaceborne SAR and InSAR technology are introduced through exemplifying the typical SAR systems, and the development of SAR technology in China is also depicted. Finally, the processing results of SIR-C/X-SAR spaceborne SAR data are given.