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60 years of radar remote sensing: Four-stage development

  • role： First author第一作者
  • Email：hdguo@radi.ac.cn
  • Introduction：郭华东，1950生，男，研究员，中国科学院院士，发展中国家科学院院士，研究方向为遥感科学与应用。E-mail：hdguo@radi.ac.cn
GUO Huadong,  
  • No information about the author is available
ZHANG Lu

resumen

Synthetic Aperture Radar (SAR) remote sensing has experienced 60 years of development. It has played an important role in earth observation, especially in the fields of global change, resource exploration, environmental monitoring, disaster assessment, urban planning and planetary exploration. Throughout the development process of SAR remote sensing, it has essentially been a process of continuous exploitation and utilization of microwave and electromagnetic wave resources. According to its observation technology and electromagnetic wave resources utilized, SAR remote sensing has experienced four stages: the single-band and single-polarization SAR stage, the multi-band and multi-polarization SAR stage, the polarization and interferometric SAR stage, and the fourth stage or the new stage marked by the emergence of dual/multi-station or constellation observation, high spatio-temporal resolution and wide swath mapping, and 3-D structure imaging capability. Based on the author’s rich research experiences in the field of SAR remote sensing, this paper first briefly summarizes and reviews the characteristics of various stages and the landmark technologies, as well as the typical applications of SAR remote sensing in agriculture, forestry, geology and disaster application fields. Secondly, from the viewpoint of observation technology, data processing and application, the paper expounds the development trend of SAR remote sensing in the new stage, as well as the prospect of combining SAR remote sensing with artificial intelligence and big data techniques. Finally, with a view to the future, the promising research of the lunar-based SAR earth observation platform is introduced. Establishing a Moon-based SAR Earth observation system can help to observe large scale geoscientific phenomena which is difficult to obtain from airborne or spaceborne satellites, and will open up a new direction of SAR earth observation technology and application.

palabra clave

radar remote sensing;four-stage development;retrospect and prospects;moon-based SAR earth observation

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