Reduction of receive data of a radar, in particular, a synthetic aperture radar
AssigneeAirbus DS GmbH
InventorThomas Becker
Life of this patent
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Abstract
A method for the reduction of receive data of a radar includes receiving a radar echo signal emanating from a chirp-like transmit signal and specifying a temporal receive window of the radar echo signal as a function of an area to be detected by a radar. The method also includes dividing the received radar echo signal into a plurality of spectral sub-bands, determining sub-band windows for each of the plurality of spectral sub-bands, activating the sub-band windows within the temporal receive window of the radar echo signal as a function of a receive time of the radar echo signal, and then sampling the radar echo signal using a sampling rate that is adjusted as a function of a number of sub-band windows active at a respective sampling instance.
Claims19
A method for the reduction of receive data of a radar having the following steps:
- receiving a radar echo signal emanating from a chirp-like transmit signal;
- specifying a temporal receive window of the radar echo signal as a function of an area to be detected by a radar;
- dividing the received radar echo signal into a plurality of spectral sub-bands;
- determining sub-band windows for each of the plurality of spectral sub-bands;
- activating the sub-band windows within the temporal receive window of the radar echo signal as a function of a receive time of the radar echo signal;
- sampling the radar echo signal using a variable sampling rate that is adjusted as a function of a number of sub-band windows active at a respective sampling instance;
- and
- outputting sampling values of the radar echo signal as reduced receive data of the radar based on said sampling of the radar echo signal using the variable sampling rate.
A device for the reduction of receive data of a radar comprising
- a receiver for a radar echo signal emanating from a chirp-like transmit signal, wherein the receiver is configured such that a temporal receive window of a radar echo signal is specified as a function of the area to be detected by a radar;
- a spectral analysis device configured to divide the radar echo signal into a plurality of spectral sub-bands;
- a sub-band selection device configured to determine sub-band windows for each of the plurality of spectral sub-bands, to activate the sub-band windows within the temporal receive window of the radar echo signal, and to sample the radar echo signal by a variable sampling rate which is adjusted as a function of a number of sub-band windows active at a respective sampling instance.
Dependencies are inferred from the claim text.