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Indoor parking lot location method

A positioning method and parking lot technology, which are applied to satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve the problem of high calculation amount, and achieve the effects of accurate environmental parameters, small calculation amount, and high positioning accuracy.

Inactive Publication Date: 2016-10-12
XIHUA UNIV
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AI Technical Summary

Problems solved by technology

However, its disadvantage is that it requires a large amount of data collection in the early stage, and the calculation amount is relatively high during feature matching.

Method used

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  • Indoor parking lot location method

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Embodiment Construction

[0026] The specific embodiment of the present invention will be described with reference to the accompanying drawings.

[0027] Such as figure 1 As shown, the indoor parking lot positioning method includes the following steps:

[0028] Step 1, in the offline stage, mainly builds an offline Radio Map (fingerprint database). Set the reference node for the positioning scene, collect the RSSI (signal strength value) of the reference node, and establish a RadioMap (fingerprint library) composed of the coordinates of the reference node and the RSSI of the reference node;

[0029] The specific process is:

[0030] (1) The reference nodes must be spread throughout the entire positioning scene, and the RSSI of each reference node is collected, according to the logarithmic path loss model: RSSI(d) is the signal strength value from i under the reference node, A and N are the environmental parameters of the positioning scene, d0 is a constant, ξ is the Gaussian noise component, and th...

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Abstract

The invention relates to an automobile location method, and especially an indoor parking lot location method. The method comprises the steps of 1, setting a reference node for a location scene, collecting an RSSI of the reference node, and establishing a Radio Map composed of a coordinate of the reference node and the RSSI of the reference node; 2, carrying out Euclidean distance operation by employing the RSSI collected by a terminal and the RSSI in a fingerprint library; and 3, determining the minimum reference node coordinate obtained through the Euclidean distance operation as the location of a target. According to the indoor parking lot location method provided by the invention, the environment parameters in the location scene are precise, the data collection workload is low, the calculation quantity is small, the location precision is high, and the cost is low.

Description

technical field [0001] The invention relates to a vehicle positioning method, in particular to an indoor parking lot positioning method. Background technique [0002] Indoor parking lot positioning technology is for fast positioning to achieve the purpose of finding a car. Since the environment of the indoor parking lot is not as complicated as the indoor environment, and the required positioning accuracy is not as accurate as that of the indoor positioning, the indoor positioning method is used for reference in the indoor parking lot positioning. However, the current indoor positioning technology also has many problems. [0003] At present, AGPS (Assisted Global Positioning System, referred to as: AGPS) technology and GPS technology have been relatively mature, but due to the complexity of the indoor environment, the positioning accuracy of using GPS for indoor positioning is not high. The current popular indoor positioning technologies mainly include ultra-wideband, ultr...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S19/49
CPCG01S19/49H04W64/00
Inventor 王维博林竞力叶凯胡夏融郑永康孙敬欢余本富
Owner XIHUA UNIV
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