Bistatic Spaceborne-Airborne Forward-looking SAR
Bistatic Spaceborne-Airborne Forward-looking SAR
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发表时间：
2010-06
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通讯作者：
I. Walterscheid;Thomas Espeter;J. Klare;A. Brenner
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作者：
I. Walterscheid;Thomas Espeter;J. Klare;A. Brenner
本文论证和分析了机载被动前视SAR与星载照明系统相结合的成像能力。毫无疑问，前视SAR系统具有多种应用，如飞机的导航和着陆辅助。过去，在一个平台上实现这样的系统由于左/右模糊和差的多普勒分辨率而在前向方向上遭受差的成像条件。使用具有空间分离的发射器和接收器的双基地系统，可以避免图像模糊，并且可以显著地提高多普勒分辨率。据我们所知，本文介绍了世界上第一个双基地SAR实验，以证明在前向成像的能力和可行性。雷达卫星TerraSAR-X用作发射机，机载合成孔径雷达系统PAMIR用作接收机。
This paper demonstrates and analyzes the imaging capability of a passive airborne forward-looking SAR in combination with a spaceborne illumination system. Without doubt, a forward-looking SAR system has a multitude of applications like navigation and landing assistance for aircrafts. In the past, the realization of such a system on one platform suffered from poor imaging conditions in forward direction due to left/right ambiguities and poor Doppler resolution. Using a bistatic system with a spatially separated transmitter and receiver, the image ambiguities can be avoided and the Doppler resolution can be significantly improved. To our knowledge this paper presents the worldwide first bistatic SAR experiment to demonstrate the capability and feasibility of imaging in forward direction. The radar satellite TerraSAR-X has been used as transmitter and the airborne SAR system PAMIR as receiver.