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。

youdao

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。

youdao

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。

youdao