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Method and device for solving velocity ambiguity, method and device for determining moving speed of object and related equipment

A speed and fuzzy solution technology, which is applied in the field of speed fuzzy resolution and determination of object moving speed, and can solve problems such as reducing the maximum measurement speed range of the sensor

Pending Publication Date: 2021-05-07
CALTERAH SEMICON TECH SHANGHAI CO LTD
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Problems solved by technology

[0004] However, compared with a sensor with a single transmitting antenna, adding a transmitting antenna will reduce the sampling frequency of the velocity dimension when the sensor performs signal processing, thereby reducing the maximum measurement velocity range of the sensor

Method used

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  • Method and device for solving velocity ambiguity, method and device for determining moving speed of object and related equipment
  • Method and device for solving velocity ambiguity, method and device for determining moving speed of object and related equipment
  • Method and device for solving velocity ambiguity, method and device for determining moving speed of object and related equipment

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Embodiment Construction

[0083] In a speed ambiguity resolution method provided by an embodiment of the present application, the detection of the target speed can be effectively realized by using beamforming, that is, the method is applied to a frequency modulated continuous wave (FMCW) with at least two transmitting antennas and at least one receiving antenna. In the Continuous Wave (FMCW) sensor, operations such as ADC and 2D-FFT processing are performed on the echo signal first to obtain a phase sequence corresponding to the transceiver channel one by one, and then based on the set of angles to be searched and the set of fuzzy numbers to be searched to obtain The phase difference sequence between the transmitting and receiving channels, and then the beamforming operation is performed based on the phase sequence and the phase difference sequence to obtain the energy spectrum corresponding to each phase difference sequence, and finally the maximum energy spectrum in the extreme value is used as the tar...

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Abstract

The invention discloses a method and device for solving velocity ambiguity, a method and device for determining the moving speed of an object and related equipment. The method for determining the moving speed of the object comprises the steps of: carrying out fast Fourier transform processing on sampling signals corresponding to each transmitting antenna on each receiving antenna, and obtaining a phase sequence of the sampling signals; according to a plurality of different directions of arrival and a plurality of different compensation frequencies, determining the phase difference of the sampling signal corresponding to each phase in the phase sequence of the sampling signals relative to reference sampling signals, and obtaining a plurality of phase difference sequences; and carrying out vector operation on the phase difference sequences and the phase sequence of the sampling signals to obtain an energy value corresponding to each phase difference sequence, and determining the moving speed of the object according to a compensation frequency corresponding to the phase difference sequence with the maximum energy value. Therefore, the measurable range of the Doppler frequency of an MIMO radar system can be increased, so that the measurable range of the actually measurable moving speed of the object can be increased, and the accuracy of measuring the moving speed of the object can be improved.

Description

[0001] This application is required to be submitted to the China Patent Office on February 28, 2020. The application number is 202010134584.7, and the title of the invention is "a method, device and equipment for determining the moving speed of an object", and the application number is 202010131565.9, and the name of the invention is "target object". The priority of the Chinese patent application of "Azimuth Angle Determination Method, Device, Equipment and Storage Medium", the entire content of which is incorporated in this application by reference. technical field [0002] The present application relates to the technical field of target detection, in particular to a method for de-ambiguous velocity, a method and device for determining the moving velocity of an object, integrated circuits, radio devices, and equipment. Background technique [0003] At present, when a sensor is used for target detection, in order to realize functions such as radiation directionality and targe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/58G01S7/41
CPCG01S13/583G01S7/418
Inventor 张艳群朱砚张小龙
Owner CALTERAH SEMICON TECH SHANGHAI CO LTD
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