Based on the concept of aperture synthesis sparse antenna, the imaging radar on the stratosphere airship for the earth observation is investigated.

基于稀疏综合孔径天线概念，研究了平流层飞艇载对地观测成像雷达系统中的重要问题。

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With the development of science and technology, many countries in the world have a strong interest in developing stratosphere airship platforms since 21 century.

进入21世纪以来，随着科技的飞速发展，世界上掀起了研究和开发平流层平台的热潮。

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