UWB Positioning Terminal Synchronization via Time Difference Calculation
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Solution Overview
Problem
Conventional UWB positioning systems face complexity and difficulty in synchronization, leading to precision issues due to the need for precise time synchronization control across multiple transmitters and receivers, which is challenging to implement and prone to signal attenuation or distortion.
Innovation Solution
A UWB high-precision positioning system that uses a central controller to synchronize UWB positioning signal transmitters and receivers wirelessly, allowing them to send and receive signals at specific intervals, with receivers calculating time differences and transmitting correction values to terminals to remove synchronization errors, thereby simplifying the network and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional TDOA positioning systems use precise time synchronization control over each transmitter or receiver, then positioning precision can be ensured, but the system requires complicated and precise time synchronization control networks with cable connections
Solution Approach 1:
The patent extracts the time synchronization function from the complex cable-based control network and relocates it to the positioning terminals themselves. Each terminal independently performs time synchronization by receiving timing signals from multiple transmitters and calculating time differences, eliminating the need for a centralized synchronization control network with cable connections.
Solution Approach 2:
Positioning terminals autonomously perform time synchronization operations without external control. Each terminal independently receives timing signals from transmitters, calculates arrival time differences, and determines its own position, making the system self-synchronizing and eliminating complex centralized control infrastructure.
2Reliability
If cable connections are used for time synchronization control, then synchronization can be maintained, but signal attenuation or distortion occurs
Solution Approach 1:
The patent replaces the mechanical cable-based signal transmission system with wireless electromagnetic signal transmission. Positioning terminals receive timing signals wirelessly from UWB transmitters, eliminating physical cable connections and thereby avoiding signal attenuation and distortion caused by cable transmission while maintaining synchronization reliability through the properties of wireless UWB signals.
3Stability of the object's composition
If a centralized synchronization controller is used to control all transmitters and receivers, then uniform synchronization can be achieved, but the network becomes complicated and implementation becomes difficult
Solution Approach 1:
The patent segments the centralized synchronization control function into distributed independent operations at each positioning terminal. Instead of one controller managing all devices, each terminal independently processes timing signals from transmitters and performs its own synchronization calculations, distributing the control function and simplifying the network architecture while maintaining synchronization uniformity through consistent signal processing at each node.
Data Source
AI summary
Provided are a UWB high-precision positioning system, a positioning method and apparatus, and a computer readable medium. The positioning system comprises at least one UWB positioning signal transmitter group, and at least one central controller for controlling the synchronization of the UWB positioning signal transmitter group. Each UWB positioning signal transmitter group comprises N UWB positioning signal transmitters, where N is an integer equal to or greater than three. Wireless communication is realized between any two UWB positioning signal transmitters and between any UWB positioning signal transmitter and the central controller. The positioning system further comprises at least one positioning terminal. The positioning terminal is used for receiving a UWB positioning signal sent by each UWB positioning signal transmitter. Wireless communication is realized between the positioning terminal and the central controller.