Radar system with synthetic aperture
First Claim
1. A synthetic aperture radar (SAR) system comprising:
- a radar antenna having at least one partial antenna, of which each at least one partial antenna comprises a plurality of phase centers with assigned transmit/receive modules and a signal processor for coherent processing of signals of the phase centers;
each of the signal processors comprising a hybrid beam forming module configured to digitize and process analog receive signals received by the transmit/receive modules of the phase centers, and to convert the digitally processed receive signals into analog signals, andan analog receive network configured to combine the analog signals of respective transmit/receive modules with one another to form an output signal.
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Accused Products
Abstract
Synthetic aperture radar (SAR) system and method of processing signals in a SAR system. The SAR system includes includes a radar antenna having at least one partial antenna, of which each at least one partial antenna includes a plurality of phase centers with assigned transmit/receive modules and a signal processor for coherent processing of signals of the phase centers. The signal processors include a hybrid beam forming module structured and arranged to digitize and process analog receive signals received by the transmit/receive modules of the phase centers, and to convert the digitally processed receive signals into analog signals. Further, an analog receive network is structured and arranged to combine the analog signals of respective transmit/receive modules with one another to form an output signal.
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Citations
20 Claims
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1. A synthetic aperture radar (SAR) system comprising:
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a radar antenna having at least one partial antenna, of which each at least one partial antenna comprises a plurality of phase centers with assigned transmit/receive modules and a signal processor for coherent processing of signals of the phase centers; each of the signal processors comprising a hybrid beam forming module configured to digitize and process analog receive signals received by the transmit/receive modules of the phase centers, and to convert the digitally processed receive signals into analog signals, and an analog receive network configured to combine the analog signals of respective transmit/receive modules with one another to form an output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for processing SAR signals with a radar antenna having at least one partial antenna, wherein each partial antenna includes a plurality of phase centers, transmit/receive modules assigned to the plurality of phase centers, and a signal processor for coherent processing of signals of the phase centers, the method comprising:
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digitizing and processing analog receive signals from the transmit/receive modules of the phase centers; converting the digitally processed receive signals into analog signals and to be fed to an analog receive network; and combining the analog signals of respective transmit/receive modules with one another to form an output signal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification