Target detection device and target detection method
AssigneeMitsubishi Electric Corporation
InventorsKazuaki Maniwa, Satoshi Kageme, Teruyuki Hara
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Abstract
Target detection units respectively performing detection processing of targets which are different in spatial extent from each other on the basis of a detection result of amplitude or power by a detection unit are provided, and at least one determination processing unit is configured to determine presence or absence of targets from a result of the detection processing of targets by the target detection units. As a result of this configuration, it is possible to detect a target even when it has a spatial extent.
Claims13
A target detection device comprising:
- a memory;
- and
- processing circuitry including:
- a detector configured to detect amplitude or power of a received signal of an electromagnetic wave reflected by a target;
- a plurality of target detectors configured to perform constant false alarm rate processing as a detection processing of targets which are different in spatial extent from each other and in which ranges of guard cells are different from each other among the plurality of target detectors on a basis of a detection result of the amplitude or power by the detector;
- and
- at least one determination processor configured to determine presence or absence of a target from a result of the detection processing of targets performed by the plurality of target detectors by calculating, for each of the plurality of target detectors, a multiplication value of a weight value set for the respective target detector and detection values each indicating the result of the detection processing of a target performed by the respective target detector and by comparing a sum of the multiplication values of the weight values and the detection values for the plurality of target detectors and a target determination threshold,
- wherein weight values each corresponding to a spatial extent of a detectable target are set for each of the plurality of target detectors.
A target detection method for detecting a target having a spatial extent that exceeds the resolution of a radar and a range of a guard cells in CFAR processing, comprising:
- detecting, by a detector, amplitude or power of a received signal of an electromagnetic wave reflected by a target;
- performing, by each of a plurality of target detectors, constant false alarm rate processing as a detection processing of targets which are different in spatial extent from each other and in which ranges of guard cells are different from each other among the plurality of target detectors on a basis of a detection result of the amplitude or power by the detector;
- determining, by at least one determination processor, presence or absence of a target from a result of the detection processing of targets by the plurality of target detectors by calculating, for each of the plurality of target detectors, a multiplication value of the weight value set for a respective target detector and detection values, each indicating a result of the detection processing of a target by the respective target detector, and by comparing a sum of the multiplication values of the weight values and the detection values of the plurality of target detectors and a target determination threshold;
- and
- outputting a determination result indicating the presence or absence of a target and displaying the spatial extent of detected targets based on the determination result,
- wherein weight values each corresponding to a spatial extent of a detectable target are set for each of the plurality of target detectors.
Dependencies are inferred from the claim text.