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US 12,754,320 B2Granted
Radar detection method and related apparatus
AssigneeYinwang Intelligent Technologies Co., Ltd.
InventorsMenglin Li, Qiang Li, Tong Jiang
Life of this patent
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Abstract
A radar detection method includes intercepting a plurality of measurement units (MUs) from a beat frequency signal of a radar based on a time domain sliding step, where a time domain length of each of the plurality of MUs is greater than a time domain length of a preset sliding step; determining frequency information of each MU; and obtaining a radar point cloud detection result based on the frequency information of each MU, where the detection result includes at least one of a speed of a target object or a distance of the target object.
Claims20
A method comprising:
- receiving a beat frequency signal of a radar;
- sampling, based on a time domain sliding step, the beat frequency signal to generate measurement units (MUs), wherein a first time domain length of each of the MUs is greater than a second time domain length of a preset sliding step, wherein a third time domain length of a first MU in the MUs is different from or the same as a fourth time domain length of a second MU in the MUs, wherein each of the MUs is a measurement of the beat frequency signal during the first time domain length, and wherein the time domain sliding step and the preset sliding steps are differences in time between beginnings of adjacent MUs of the MUs;
- determining frequency information of each of the MUs;
- and
- obtaining, based on the frequency information, a radar point cloud detection result comprising at least one of a speed of a target object or a distance of the target object.
2 more elements
An apparatus comprising:
- a memory configured to store instructions;
- and
- a processor coupled to the memory and configured to execute the instructions to cause the apparatus to:
- receive a beat frequency signal of a radar;
- sample, based on a time domain sliding step, the beat frequency signal to generate measurement units (MUs), wherein a first time domain length of each of the MUs is greater than a second time domain length of a preset sliding step, wherein signal energy accumulated within a third time domain length of a first MU in the MUs indicates that a signal-to-noise ratio of the first MU is higher than a preset threshold, wherein each of the MUs is a measurement of the beat frequency signal during the first time domain length, and wherein the time domain sliding step and the preset sliding step are differences in time between beginnings of adjacent MUs of the MUs;
- determine frequency information of each of the MUs;
- and
- obtain, based on the frequency information, a radar point cloud detection result comprising at least one of a speed of a target object or a distance of the target object.
5 more elements
A lidar system comprising:
- a laser configured to transmit a laser signal;
- and
- a processor coupled to the laser, wherein the processor is configured to:
- receive a beat frequency signal of a radar;
- sample, based on a time domain sliding step, the beat frequency signal to generate measurement units (MUs), wherein a first time domain length of each of the MUs is greater than a second time domain length of a preset sliding step, wherein the beat frequency signal comprises a positive slope beat frequency signal and a negative slope beat frequency signal that are alternately from a laser transceiver in a time domain, and wherein each of the MUs comprises a positive slope part and a negative slope part, wherein each of the MUs is a measurement of the beat frequency signal during the first time domain length, and wherein the time domain sliding step and the preset sliding step are differences in time between beginnings of adjacent MUs of the MUs;
- determine frequency information of each of the MUs;
- and
- obtain, based on the frequency information, a radar point cloud detection result comprising at least one of a speed of a target object or a distance of the target object.
5 more elements
Dependencies are inferred from the claim text.