Identification and removal of a false detection in a radar system
AssigneeRaytheon Canada Limited
InventorsReza M. Dizaji, Anthony M. Ponsford, Richard McKerracher, Emily Wang
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Abstract
In one aspect, a method to identify and remove a false detection includes receiving a detection from a constant false alarm rate (CFAR) processor, performing a first similarity measure on adjacent coherent integration time values (CITs) corresponding to the detection, performing a second similarity measure on neighbor CITs corresponding to the detection, determining if at least one of the first or second similarity measure is below a threshold and discarding the detection if at least one of the first or second similarity measures is below the threshold.
Claims19
A method to identify and remove a false detection comprising:
- receiving a detection from a constant false alarm rate (CFAR) processor;
- performing a first similarity measure on adjacent coherent integration time values (CITs) corresponding to the detection;
- performing a second similarity measure on neighbor CITs corresponding to the detection;
- determining if at least one of the first or second similarity measure is below a threshold;
- and
- discarding the detection if at least one of the first or second similarity measures is below the threshold.
An apparatus, comprising:
- electronic hardware circuitry to identify and remove a false detection, the circuitry configured to:
- receive a detection from a constant false alarm rate processor (CFAR);
- perform a first similarity measure on adjacent coherent integration time values (CITs) corresponding to the detection;
- perform a second similarity measure on neighbor CITs corresponding to the detection;
- determine if at least one of the first or second similarity measures is below a threshold;
- and
- discard the detection if at least one of the first or second similarity measure is below the threshold.
The apparatus of claim 10, further comprising circuitry configured to:
- perform Doppler processing on the pulse data;
- generate beams from the Doppler processed data;
- and
- provide the beams to an external interference cancellation (EIC) processor to remove interference;
- and
- provide an output of the EIC processor to the CFAR processor.
An article comprising:
- a non-transitory medium that stores executable instructions to identify and remove a false detection, the instructions causing a machine to:
- receive a detection from a constant false alarm rate processor (CFAR);
- perform a first similarity measure on adjacent coherent integration time values (CITs) corresponding to the detection;
- perform a second similarity measure on neighbor CITs corresponding to the detection;
- determine if at least one of the first or second similarity measures is below a threshold;
- and
- discard the detection if at least one of the first or second similarity measure is below the threshold.
Dependencies are inferred from the claim text.