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Multiple human-targets location and tracking method based on multichannel phase comparison location

A human target, positioning and tracking technology, which is applied in the field of positioning and tracking of multiple human targets, and can solve problems such as complex algorithm flow and large computational complexity

Active Publication Date: 2017-09-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The above method has a complex algorithm flow and high computational complexity, but in the actual target positioning and tracking occasions, a certain real-time performance is required

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  • Multiple human-targets location and tracking method based on multichannel phase comparison location

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Embodiment Construction

[0044] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0045] Using the present invention to locate and track multiple moving targets, the schematic diagram of the indoor measured data scene is as follows figure 2 As shown, the zero point of the coordinate system is located at the position of the transmitting antenna, and the four receiving antennas are placed at equal intervals along the x-axis. The horizontal interval between two adjacent receiving antennas is half wavelength d=λ / 2, and the center frequency of the radar transmitting signal is 24GHz , A linear frequency modulation signal with a bandwidth of 500MHz, and a signal duration of 300us.

[0046] In the demonstration experiment, the three human targets start from different starting points respectively, and the actual motion traje...

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Abstract

The present invention discloses a multiple human-targets location and tracking method based on multichannel phase comparison location. The method comprises: based on a linear frequency modulation continuous wave radar system of single input multiple output, employing the moving target indication and de-mean method to perform preprocessing of experiment data and perform diploid interpolation refinement distance dimension windowing Fourier transform of each period of the echo data so as to obtain object distance information according to the distance spectrum of an object; obtaining the object distance information according to the object distance; extracting the phase information corresponding to the target from the peak value where a frequency spectrum object is located; fusing the phase information of different receiving channels, calculating the phase differences among different receiving channels, calculating the azimuth or the pitch angle of the object, and combining the object distance information to calculate the location result of the object at a two-dimensional plane or a three-dimensional plane; and finally, employing the Kalman filtering method to realize the tracking of the target. The multiple human-targets location and tracking method based on the multichannel phase comparison location can perform detection, location and tracking of a plurality of human body objects indoors and outdoors so as to effectively reject multiple paths while keeping the target and perform accurate location of the object.

Description

technical field [0001] The invention relates to the technical field of radar target positioning and tracking, in particular to a positioning and tracking method for multiple human targets. Background technique [0002] In many detection systems, the detection and location tracking of moving human targets have important applications. For example, in the field of smart home, house monitoring can be realized; in the field of vehicle radar, various functions such as unmanned driving and collision avoidance can be realized. [0003] Many research institutions at home and abroad have carried out research on the positioning and tracking of moving human targets. University of Electronic Science and Technology of China proposed a joint multi-target detection and localization method based on noncoherent MIMO radar system (Y.Ai, W.Yi, M.R.Morelande and L.J.Kong, "Joint multi-target detection and localization with a noncoherent statistical MIMO radar , "International Conf.on Informati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 崔国龙熊丁丁付月孙智冯力方赵青松孔令讲杨晓波张天贤
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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