Positioning method based on building layout constraint under complex indoor environment

An indoor environment and positioning method technology, which is applied in the positioning field in complex indoor environments, can solve problems such as influence weights, and achieve the effect of simple environment deployment and low computational complexity
CN104936147AActive Publication Date: 2015-09-23SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Publication Date
2015-09-23

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Abstract

The invention relates to a complex indoor environment positioning method based on building layout constraint; the method comprises the following steps: evaluating ambient noise distribution; calculating an initial position of a mobile object; evaluating position in a real time positioning process. Proposed prior distribution aims to different zones of the object, and distribution function of a candidate position can be corrected, thus resisting influences by time varying strong noises against an evaluation result; in maximum posterior probability solving, a multi-hypothesis maximum likelihood estimation method is employed, so the proposed positioning method has robustness against time varying noises and stadia / non-stadia mixed complex conditions. The complex indoor environment positioning method is simple in environment disposition, can obtain channel prior knowledge through data acquisition between reference nodes, thus realizing real time positioning process; the method is low in calculation complexity, and suitable for low-power equipment and system realization.
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Description

technical field

[0001] The invention relates to the technical field of application of the Internet of Things, in particular to a positioning method in a complex indoor environment based on architectural pattern constraints. Background technique

[0002] Indoor positioning applications are one of the core contents of the Internet of Things (IoT), and its related academic research and commercial applications have been widely carried out for decades. These location-based services (Location Based Service, LBS) mainly include emergency rescue, social networking, smart home and shopping mall advertising push services. Especially in 5G communication standards, location services play an important role and influence in massive connections.

[0003] At present, typical indoor target positioning systems are generally divided into active and passive. The passive positioning system mainly uses cameras and radars to complete the acquisition of the target position without the need for th...

Claims

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