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Target detection method and device based on MIMO radar and electronic equipment

A target detection and radar technology, applied in the field of radar, can solve problems such as difficult to effectively and conveniently detect, target signal and interference signal are difficult to distinguish targets, etc., to achieve the effect of increasing convenience and reducing impact

Active Publication Date: 2021-12-10
NANJING FALCON EYE ELECTRONIC TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a target detection method, device and electronic equipment based on MIMO radar, which are used to solve the problem in the prior art that the target signal and the interference signal are difficult to distinguish between multiple transmission channels of the radar, and the resulting target is difficult to detect effectively and conveniently.

Method used

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  • Target detection method and device based on MIMO radar and electronic equipment
  • Target detection method and device based on MIMO radar and electronic equipment
  • Target detection method and device based on MIMO radar and electronic equipment

Examples

Experimental program
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Embodiment 1

[0125] Taking a MIMO radar with 12 transmitting antennas and 16 receiving antennas as an example, if the 12 transmitting antennas use 6 times of time-sharing and 2 channels of transmission, the schematic diagram of the transmitted waveform and the sequence of transmission are as follows figure 2 , image 3 shown.

[0126] see figure 2 , figure 2 It is a schematic diagram of waveforms of 6 times of time-sharing and 2 channels in an embodiment of the present invention. figure 2 12 transmit antennas are shown, and the column items represent Chip1-TX1, Chip1-TX2, Chip1-TX3, Chip2-TX1, Chip2-TX2, Chip2-TX3, Chip3-TX1, Chip3-TX2, Chip3-TX3, Chip4- TX1, Chip4-TX2, Chip4-TX3; line items represent a pulse sequence period (Burst), each grid represents a time division, that is, a time division represents a Chirp cycle, and 6 divisions represent 6 time divisions. Ts represents the time of ADC sampling, and Tr represents the time of the entire Chirp cycle. The row items are respec...

Embodiment 2

[0183] see Figure 7 , Figure 7 It is a schematic diagram of waveforms of 4 times of time-sharing and 3 channels in another embodiment of the present invention. Figure 7 Shown are the first channel (ie channel one, the same below), the second channel (ie channel two, the same below) and the third channel (ie channel three, the same below).

[0184] Among them, the transmitting antennas Chip1-TX1, Chip2-TX1, Chip3-TX1, and Chip4-TX1 belong to the first channel; the transmitting antennas Chip1-TX2, Chip2-TX2, Chip3-TX2, and Chip4-TX2 belong to the second channel; the transmitting antenna Chip1-TX2 belongs to the second channel; TX3, Chip2-TX3, Chip3-TX3, and Chip4-TX3 belong to the third channel.

[0185] In a pulse sequence cycle (Burst), time-sharing transmits 4 times, that is, within the time of Chirp1, chip 1 (Chip1-TX1, Chip1-TX2, Chip1-TX3) is in the first channel, the second channel, and the third channel at the same time Transmit; chip 2 (Chip2-TX1, Chip2-TX2, Chip2...

Embodiment 3

[0191] see Figure 8 , Figure 8 It is a schematic diagram of waveforms of 2 time-sharing 6 channels in yet another embodiment of the present invention. Figure 8 Shows the first channel (that is, channel one, the same below), the second channel (that is, channel two, the same below), the third channel (that is, channel three, the same below), and the fourth channel (that is, channel three, the same below) , the fifth channel (that is, channel five, the same below) and the sixth channel (that is, channel six, the same below).

[0192]Among them, the transmitting antennas Chip1-TX1 and Chip3-TX1 belong to the first channel; the transmitting antennas Chip1-TX2 and Chip3-TX2 belong to the second channel; the transmitting antennas Chip1-TX3 and Chip3-TX3 belong to the third channel; the transmitting antennas Chip2-TX1, Chip4-TX1 belongs to the fourth channel; the transmitting antennas Chip2-TX2 and Chip4-TX2 belong to the fifth channel; the transmitting antennas Chip2-TX3 and Ch...

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Abstract

The invention provides a target detection method and device based on an MIMO radar and electronic equipment, and the method comprises the steps: sequentially transmitting coded pulse signals from a first preset number of transmitting antennas in a mode of time division of N channels for M times for each pulse sequence period of the radar; sampling echo signals of the transmitted pulse signals to obtain sampling signals, and decoding the sampling signals to obtain decoding signals corresponding to the N channels respectively; for each channel, performing distance-Doppler imaging processing on the decoded signal corresponding to the channel to obtain all target signals corresponding to the channel; and determining the target signals located at the same distance-Doppler unit position in the distance-Doppler imaging corresponding to all the channels as effective target signals corresponding to the target. According to the invention, the influence of signal interference among multiple transmission channels on target detection can be reduced, and the convenience of target detection is improved.

Description

technical field [0001] The present invention relates to the technical field of radar, in particular to a target detection method, device and electronic equipment based on MIMO radar. Background technique [0002] At present, vehicle and traffic radars mostly use multi-chip cascaded MIMO (Multiple-Input Multiple-Output) technology, which can achieve high resolution in the azimuth and elevation dimensions, and provide high-quality 3D point cloud images , which greatly expands the application scenarios of vehicle and traffic radar. Among them, waveform design and target detection are the key to the design of multi-chip cascaded MIMO radar system. In order to enhance the radar anti-jamming capability, the invention provides a target detection method based on MIMO radar. Contents of the invention [0003] The present invention provides a target detection method, device and electronic equipment based on MIMO radar, which are used to solve the problem in the prior art that the ...

Claims

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/411
Inventor 徐刚蒋梦杰郭坤鹏张燎
Owner NANJING FALCON EYE ELECTRONIC TECH CO LTD