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US 12,607,726 B2Granted
Detection method and detection apparatus
AssigneeNingbo ABAX Sensing Electronic Technology Co., Ltd.
InventorShuyu Lei
Life of this patent
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Abstract
The present invention relates to the field of radar detection. Provided are a detection method and a detection apparatus. The method comprises: emitting a first waveform signal to a target to undergo detection, and receiving a second waveform signal reflected by the target on the basis of the first waveform signal, the second waveform signal carrying spatial modulation information; generating, on the basis of the second waveform signal, a detection signal corresponding to the spatial modulation information, and obtaining a signal flight time carried on the detection signal; and determining distance data of the target on the basis of multiple pieces of the spatial modulation information and signal flight times corresponding thereto.
Claims7
A detection method, comprising:
- transmitting a first waveform signal to a to-be-detected target and receiving a second waveform signal reflected by the to-be-detected target based on the first waveform signal, wherein the second waveform signal carries a piece of spatial modulation information;
- generating a detection signal corresponding to the piece of spatial modulation information based on the second waveform signal and acquiring a signal flight time carried by the detection signal;
- and
- determining distance data of the to-be-detected target based on a plurality of pieces of spatial modulation information and signal flight times respectively corresponding to the plurality of pieces of spatial modulation information,
- wherein each piece of spatial modulation information comprises a spatial modulation matrix, and the spatial modulation matrix comprises elements having at least two different values corresponding to different light intensities, and
- wherein the determining distance data of the to-be-detected target based on a plurality of pieces of spatial modulation information and signal flight times respectively corresponding to the plurality of pieces of spatial modulation information comprises:
- acquiring a target detection signal greater than or equal to a detection signal threshold from detection signals respectively corresponding to spatial modulation matrixes, to obtain one or more target detection signals;
- multiplying each of the target detection signals by the corresponding spatial modulation matrix and the corresponding signal flight time to obtain a multiplication result, and accumulating and averaging the multiplication result to obtain a first measurement time matrix;
- multiplying the first measurement time matrix by a percentage of non-zero elements in the spatial modulation matrix to obtain a product, and dividing the obtained product by the number of the one or more target detection signals to obtain a second measurement time matrix;
- and
- determining the distance data of the to-be-detected target based on matrix elements in the second measurement time matrix.
8 more elements
A detection device, comprising:
- a transmitting system configured to transmit a first waveform signal to a to-be-detected target;
- a receiving system configured to:
- receive a second waveform signal reflected by the to- be-detected target based on the first waveform signal, wherein the second waveform signal carries a piece of spatial modulation information;
- and generate a detection signal corresponding to the piece of spatial modulation information and acquire a signal flight time carried by the detection signal;
- and
- a processing system configured to determine distance data of the to-be-detected target based on a plurality of pieces of spatial modulation information and signal flight times respectively corresponding to the plurality of pieces of spatial modulation information,
- wherein each piece of spatial modulation information comprises a spatial modulation matrix, and the spatial modulation matrix comprises elements having at least two different values corresponding to different light intensities, and
- wherein the processing system comprises:
- a signal processing unit configured to acquire a target detection signal greater than or equal to a detection signal threshold from detection signals respectively corresponding to spatial modulation matrixes, to obtain one or more target detection signals;
- and
- a control unit configured to:
- multiply each of the target detection signals by the corresponding spatial modulation matrix and the corresponding signal flight time to obtain a multiplication result, and accumulate and average the multiplication result to obtain a first measurement time matrix;
- multiply the first measurement time matrix by a percentage of non- zero elements in the spatial modulation matrix to obtain a product, and divide the obtained product by the number of the one or more target detection signals to obtain a second measurement time matrix;
- and determine the distance data of the to-be-detected target based on matrix elements in the second measurement time matrix.
11 more elements
Dependencies are inferred from the claim text.