Sequential vehicle fingerprint locating method and device for millimeter-wave vehicle network
A fingerprint positioning and millimeter wave technology, applied in the field of communication, can solve the problems of lack of observation signal, vulnerability to environmental interference, obstacles to real-time location acquisition, etc.
Active Publication Date: 2019-05-24
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
Specifically, the millimeter wave signal has a high frequency band and is susceptible to environmental interference. It may be blocked by obstacles, resulting in the loss of observation signals at a certain moment.
In addition, the short silence of the target vehicle may also lead to missing observations, these unfavorable conditions will hinder real-time position acquisition
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[0065] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0066] see figure 1 , is a schematic flowchart of a sequential vehicle fingerprint positioning method for millimeter-wave Internet of Vehicles provided by an embodiment of the present invention, and the method includes:
[0067] 101. Divide the target area covered by the millimeter wave detection station into at least one small area, and set a reference point in each small area.
[0068] In this embodiment, it is assumed that the target area covered by the millimeter wave detection station is a square area, and the detection station is located at the bottom center of the target area.
[0069] Specifically, step 101 includes:
[0070] Divide each side of the target area into N equal parts 1 / 2 segment, so that the target...
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The invention discloses a sequential vehicle fingerprint locating method and device for millimeter-wave vehicle network. The method includes: dividing the target area covered by millimeter wave detection station into at least one small area and setting reference points in the small areas; performing joint modeling on signal state and sparse position of a target vehicle in the target area to obtaina dynamic change model of the target vehicle; recording the azimuth angle and signal strength of the reference point signals received by the detection station to construct a fingerprint matrix of thetarget area; according to the current signal of the target vehicle and on the basis of the dynamic change model and the fingerprint matrix, performing sequential estimation of the posterior probability of the current signal state and the sparse position of the target vehicle to acquire the current signal state and the sparse position of the target vehicle and improve accuracy in positioning.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a sequential vehicle fingerprint positioning method and device for millimeter-wave Internet of Vehicles. Background technique [0002] As an important branch of the booming Internet of Things (IoT), Internet of Vehicle (IoV) technology plays a vital role in smart cities, intelligent transportation, safe driving and other fields. In the Internet of Vehicles technology, the real-time location of the vehicle is the basis for various applications and services. Therefore, accurate and fast acquisition of the real-time location of the vehicle is the key to efficient deployment and large-scale application of the Internet of Vehicles. In addition, the millimeter wave (mmWave) communication technology based on large-scale antenna deployment is considered to be one of the key technologies widely used in the field of Internet of Vehicles due to its high-precision beam pointing, high...
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Inventor李斌陶艺文赵成林许方敏
OwnerBEIJING UNIV OF POSTS & TELECOMM