In this letter, pioneering experimental results of passive synthetic aperture radar (SAR) imaging are presented. The classical active SAR radar operates in monostatic geometry. The SAR sensor presented in this letter is a passive radar utilizing commercial Digital Video Broadcasting-Terrestrial transmitters as illuminators of opportunity. It works in a bistatic configuration, where the receiver is placed on a moving platform and the transmitter is placed on the ground and is stationary. The imaged scenes are stationary surfaces on Earth such as agriculture or urban areas, buildings, etc. In this letter, pioneering results of signal processing verified by a measurement campaign are presented. In the experiment, two synchronized passive radar receivers were mounted on a small airborne platform. The main goal of the presented experiment was to verify the possibility of ground imaging using passive SAR technology and validate previously presented theoretical results. Index Terms-Bistatic SAR (BSAR), Digital VideoBroadcasting-Terrestrial (DVB-T), passive radar, passive SAR, synthetic aperture radar (SAR).

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In this paper recent results of passive SAR imaging using a Digital Video Broadcasting-Terrestrial (DVB-T) transmitter as an illuminator of opportunity are presented. In the experiment the passive radar receiver was mounted on an airborne platform. The main goal was to verify the possibility of ground imaging using passive SAR technology utilizing ground based illuminators of opportunity.