A UWB-based signal synchronization method and indoor positioning system
An indoor positioning and synchronous positioning technology, which can be applied to services based on location information, services based on specific environments, and synchronization devices. and maintenance process, the effect of improving synchronization speed
Active Publication Date: 2020-04-17
BEIJING UNIV OF POSTS & TELECOMM
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[0005] The purpose of the embodiments of the present invention is to provide a UWB-based signal synchronization method and an indoor positioning system to solve the problems of cumbersome installation and inconvenient maintenance of the positioning system caused by the wired clock synchronization scheme in the prior art
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[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0044] The present invention will be described in detail below through specific examples.
[0045] The signal synchronization method provided by the embodiment of the present invention is applied to an indoor positioning system, and the indoor positioning system includes a repeater and multi-level positioning nodes, wherein each level of positioning nodes in the multi-level positioning nodes includes at least one positioning node.
[0046] In actual use, when ...
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The embodiment of the invention provides a UWB based signal synchronization method and an indoor positioning system. The method is applied to the indoor positioning system and comprises the steps of forwarding an outdoor base station positioning signal to a first-level positioning node of each link in an indoor positioning network corresponding to the indoor positioning system by a repeater; performing preset processing on a positioning signal by the first-level positioning node of each link to obtain a corresponding synchronous positioning signal; sending the corresponding synchronous positioning signal and signal flight time to the next-level positioning node of the link by each level of the positioning node from the first-level positioning node to the reciprocal second-level positioningnode of each link; and performing clock correction on the received synchronous positioning signal based on the received signal flight time by the next-level positioning node so as to obtain a corresponding synchronous positioning signal. The UWB based signal synchronization method realizes synchronization of indoor positioning nodes and positioning signals via a wireless communication mode, simplifies the installation and maintenance process of the indoor positioning system and is convenient for adjusting the position of each positioning node.
Description
technical field [0001] The invention relates to the technical field of indoor positioning, in particular to a UWB-based signal synchronization method and an indoor positioning system. Background technique [0002] With the development of modern work and life, people have more time to work and live indoors in a day, so it is of great significance to study indoor positioning technology. At present, the Global Navigation Satellite System (GNSS) such as the Global Positioning System (GPS) of the United States, the GLONASS of Russia, the Beidou Satellite Navigation System of China, and the Galileo Satellite Navigation System of the European Union can meet people's needs Outdoor location positioning is required. However, due to factors such as occlusion and multipath indoors, satellite signals cannot exert the availability and stability outdoors. [0003] Professor Deng Zhongliang of Beijing University of Posts and Telecommunications proposed an indoor positioning technology base...
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IPC IPC(8): H04W4/021H04W4/33H04W56/00G01C21/20
CPCG01C21/206H04W4/021H04W56/001
Inventor 邓中亮张国龙葛丽丽肖占蒙贾步云莫君刘雯
Owner BEIJING UNIV OF POSTS & TELECOMM