UWB Positioning and Tomography for Enclosed Target Localization
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Solution Overview
Problem
Existing methods struggle to accurately position suspicious objects within complex environments like flight cases and containers due to poor positioning accuracy, making it difficult for inspectors to locate and remove them during security inspections.
Innovation Solution
A method and apparatus that utilizes UWB base stations to determine the position of a terminal device within a reference system, combining this with tomography results to enhance positioning accuracy by adjusting base station layouts and employing data fitting techniques, allowing for precise guidance to the target object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If virtual position detection by tomography technology is used, then detection capability is improved, but positioning accuracy deteriorates
Solution Approach 1:
The patent segments the positioning system into two independent parts: tomography technology for detection and UWB base stations for positioning. The tomography system detects the suspicious object and provides its virtual position, while the UWB base stations independently measure the terminal device's actual position. This segmentation allows each system to optimize for its specific function, resolving the contradiction between detection capability and positioning accuracy.
Solution Approach 2:
The patent introduces UWB base stations as an intermediary system between the tomography detection system and the terminal device. The UWB base stations act as a mediator that provides accurate positioning information by measuring the distance between the terminal device and base stations, thereby compensating for the poor positioning accuracy of the tomography system alone.
2Device complexity
If base stations are arranged in a simple configuration, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement of base stations to a three-dimensional spatial distribution. By arranging base stations at the four vertices of a tetrahedron in 3D space, the system achieves better geometric coverage and positioning accuracy. This dimensional change allows the base stations to form a tetrahedral structure that provides more accurate trilateration results compared to coplanar arrangements.
Solution Approach 2:
The patent employs an asymmetric tetrahedral arrangement of base stations rather than a symmetric planar configuration. The tetrahedral structure with base stations at its four vertices creates an asymmetric three-dimensional geometry that optimizes positioning accuracy by providing better angular coverage and reducing geometric dilution of precision, while maintaining relatively simple device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves positioning accuracy for suspicious objects within enclosed spaces, enabling inspectors to efficiently locate and remove them, thereby enhancing the efficiency of security inspections.
Implementation Method 1
acquiring, in response to a positioning request, a distance information of each of a plurality of base stations for a terminal device
Implementation Method 2
a position information of the target object, where the position information of the target object is determined from a tomography result
Data Source
AI summary
The present disclosure provides a method and an apparatus of processing a positioning information, an electronic device, and a storage medium, which may be applied to a field of a positioning technology. The method includes: acquiring, in response to a positioning request, a distance information of each of a plurality of base stations for a terminal device; determining, based on a plurality of distance information, a first position information of the terminal device in a first reference system determined based on the plurality of base stations; and determining a positioning information of the terminal device for a target object based on the first position information and a position information of the target object, where the position information of the target object is determined from a tomography result.