Electronic Target for Ground Based SAR Displacement Measurements

This paper presents an electronic target designed for synthetic aperture radar systems. The electronic target features distinct antennas for transmitting and receiving. The electronic target basically receives a signal, down-converts it to baseband, applies a controllable time delay on the complex envelope, up-converts the delayed signal and transmits it towards the receiver of the SAR system. Since the delay is controllable, it can be used as artificial target with adjustable range. Even if the electronic target is placed in a cluttered area, its radar reflection can be moved away from its physical position. The performances of the electronic target when used for displacement measurements are evaluated.