Auxiliary positioning method based on building structure and user behaviors

Abstract

An auxiliary positioning method based on building structure and user behaviors includes steps: through an access point AP, detecting mobile terminals in real time and sending collected MAR triples to an access center AC; through a positioning algorithm server, inquiring about the MAR triple information of the mobile terminals from the AC; selecting two or three AP with maximum signal strength by a positioning algorithm, and inquiring about ASR triples of the AP from a database server according the MAR triples to obtain a target area set of the AP, inquiring about a constraint area set from the database server according to the previous positioning result of mobile terminals, judging whether the target area set and the constraint area set are intersected or not, and solving positioning blocks in the centers of the target area intersection and the constraint area set or positioning blocks, most close to the center of the constraint area set, in the target area intersection according to a judging result. By the auxiliary positioning method, positioning error caused by signal jitter can be reduced.

Description

technical field [0001] The invention relates to the technical field of wireless positioning, in particular to an auxiliary positioning method based on building structures and user behaviors. Background technique [0002] Commonly used wireless positioning systems generally include two types of nodes: one is nodes with known spatial coordinates, which are called anchor nodes; the other is nodes with unknown spatial coordinates, which are called measured nodes. The realization of commonly used positioning methods can generally be divided into two steps: the first step is mainly to determine the spatial distance (or angle) between the anchor node and the measured node. The commonly used ranging methods are: TOA (Time Of Arrival, Arrival time) distance measurement, TDOA (Time Differences Of Arrival, time difference of arrival) distance measurement, RSSI (Receive Signal Strength Indicator, signal indication strength) distance measurement and AOA (Angle Of Arrival, angle of arriva...

AI Technical Summary

Problems solved by technology

[0007] The existing technology mainly uses the location information contained in the wireless signal to locate the node under test. However, due to external interference, obstruction of obstacles and multipath fading of the wireless signal, the wireless signal is very unstable, which will affect the Detrimental effect on positioning accuracy

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