Wireless synchronization method, device and system of monitoring station
A monitoring station and wireless technology, applied in the field of wireless synchronization methods, devices and systems of monitoring stations, can solve problems such as accurate positioning of cross-regional targets, limitations, and single-region scenarios that cannot be effectively solved.
Active Publication Date: 2021-03-26
UBTECH ROBOTICS CORP LTD
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Problems solved by technology
[0004] In view of this, the embodiment of the present application provides a wireless synchronization method, device and system of a monitoring station to solve the problem that the wireless synchronization method in the prior art is generally limited to The scene of a single region cannot effectively solve the problem of accurate positioning of targets across regions
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[0048]In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0049] In order to illustrate the technical solutions described in this application, specific examples are used below to illustrate.
[0050] In the traditional TDOA positioning system, due to the limitation of wireless communication distance or monitoring station construction, the same synchronization network is usually in a small scene of a single area. There is no time synchroniza...
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The invention belongs to the field of positioning, and discloses a wireless synchronization method, device and system for monitoring stations, and the method comprises the steps: obtaining the position information of a plurality of monitoring stations to form the same synchronization network; determining an initially synchronized monitoring station according to the position information; determining an (i+1)th-level monitoring station synchronized with the ith-level monitoring station in the synchronization network according to the distance deviation between the monitoring stations; and according to the detection distance between the ith-level monitoring station and the (i+1)th-level monitoring station and the timestamp of the ith-level monitoring station, determining the synchronization timestamp of the (i+1)th-level monitoring station, and storing the ID of the synchronization network and the ID of the previous-level monitoring station in the synchronized monitoring station. Monitoring stations belonging to the same synchronous network are determined in a cross-regional scene according to the ID of the synchronous network. Positioning is carried out according to the monitoring stations belonging to the same synchronous network, thereby realizing accurate positioning of a target in a cross-regional scene.
Description
technical field [0001] The application belongs to the field of positioning, and in particular relates to a wireless synchronization method, device and system for monitoring stations. Background technique [0002] TDOA (English full name is Time Difference of Arrival, Chinese full name is Time Difference of Arrival) positioning is a method of using time difference for positioning. The hyperbola where the target is located is determined by measuring the absolute time difference between the arrival of the signal at the monitoring station. The location of the target is determined based on the two or more hyperbolas determined. [0003] Before TDOA positioning, high-precision time synchronization of monitoring stations is required to ensure the accuracy of the obtained positioning signals. Current monitoring station synchronization methods include wired synchronization and wireless synchronization. Among them, wired synchronization requires the use of a time server, which is e...
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Login to View More IPC IPC(8): H04W56/00
CPCH04W56/001
Inventor 赵勇胜刘志超
Owner UBTECH ROBOTICS CORP LTD