| 摘要 |
The invention describes a SAR system with a radar antenna (ANT), which is composed of one or more partial antennas (Pan1, ..., Pan6), wherein each partial antenna (Pan1, ..., Pan6) comprises a plurality of phase centers (Rad) and transmit/receive modules (TRM) assigned thereto as well as a signal processing means for the coherent processing of signals of the radiators (Rad). According to the invention, the signal processing means comprises a hybrid beam forming module (HBFM) for the digitalization and processing of the analog receive signals received by the transmit/receive modules (TRM) of the phase centers (Rad). The signal processing means is embodied to convert the digitally processed receive signals into analog receive signals and to feed them to an analog receive network, by means of which the analog signals of the respective transmit/receive modules (TRW) are combined with one another to form an output signal. |
