METHOD FOR LOCALIZING OBJECTS BY MEANS OF AN IMAGING RADAR SYSTEM AND TRANSPONDER FOR LOCALIZING OBJECTS BY MEANS OF SUCH RADAR SYSTEMS

The transponder (10) for localizing objects by means of an imaging radar system having radar signal compression and, in particular, a SAR system (radar with synthetic aperture) is provided with an antenna (12), which optionally serves as a receiving antenna for receiving a radar transmission signal (A) and as a transmitting antenna for a transponder transmission signal (F). Furthermore, the transponder (10) is provided with a decoupling unit (18), which is connected to the antenna (12) and which has an outlet for routing a radar transmission signal (A) received from the antenna (12) and an inlet decoupled from the outlet for routing a transponder transmission signal to be transmitted through the antenna (12), and a signal compression unit (14), which compresses a received radar transmission signal (A) present at the outlet of the decoupling unit (18) into a signal compression pulse (C). The transponder has a delay unit (32) to delay the signal compression pulse (C) to generate a trigger pulse (D) delayed for a predetermined delay time relative to the signal compression pulse (C), and a transponder transmission signal-generating unit (16) to generate a transponder transmission signal (F) triggered by the trigger pulse (D), which can be fed to the inlet of the decoupling unit (18).