对地观测的微波散射成像方法

A NEW MICROWAVE IMAGING METHOD FOR EARTH OBSERVATION

以微波为探测手段进行对地成像观测,能够全天候、全天时工作,在许多技术领域得到了重要应用,对微波成像的新思想、新体制、新技术的探索,也是一个非常活跃的研究领域。该文提出了一种新的微波成像方法,称为微波散射成像方法,该方法可采用收发分置工作方式,工作时只需要以单色波照射待成像地域。原理性成像模拟结果表明,使用这种方法可以获得被观测地域高几何分辨率和高辐射分辨率的微波图像。

Microwave imaging techniques which can provide all-weather, day-and-night imaging capability have important applications to many scientific fields. It is an active area to explore new microwave imaging ideas, systems and techniques. In this paper, a new microwave imaging method for earth observation is proposed. In this method, the signal transmitter and receiver are located in different platforms, and only a monochromatic microwave is required to illuminate the earth surface. Numerical simulation results show that this method can produce a microwave image with high spatial and radiation resolutions.