Shared DGPS Base Station for Low-Cost Multi-Device Positioning
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Solution Overview
Problem
Current differential global positioning systems (DGPS) are costly and inflexible, requiring either a self-built base station for high accuracy or a paid CORS service, limiting accessibility and increasing costs for individual users.
Innovation Solution
A scalable DGPS system where a single base station communicates with multiple self-moving devices, transmitting differential correction data in real time to correct GPS positioning signals, reducing the need for individual base stations and enabling a regional network for flexible and cost-effective accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a self-built base station is used for differential GPS, then positioning accuracy is improved, but cost and device complexity increase significantly
Solution Approach 1:
Multiple mobile terminals are merged into a single service group that shares one base station. The base station provides differential correction data to multiple terminals simultaneously, allowing them to all achieve high positioning accuracy without each terminal needing its own base station. This combining approach reduces overall system complexity and cost while maintaining measurement precision.
Solution Approach 2:
The base station is designed with universal functionality to serve multiple mobile terminals simultaneously. It transmits differential correction data that can be used by any terminal in the service group, making the base station a multi-functional resource that benefits multiple users rather than being dedicated to a single terminal.
2Measurement precision
If a self-built base station is used for differential GPS, then positioning accuracy is improved, but space requirement increases
Solution Approach 1:
The physical space requirement for base stations is merged and shared among multiple terminals. Instead of each terminal requiring its own base station space, one base station serves multiple terminals, reducing the total space requirement from N base stations to just one base station for N terminals.
3Measurement precision
If CORS service is used for differential GPS, then positioning accuracy is improved, but usage cost increases
Solution Approach 1:
Multiple mobile terminals are combined into a service group that shares the cost of one base station. The total cost of operating a single base station is distributed among multiple terminals, making the cost per terminal much lower than individual base stations and comparable to or better than paid CORS services.
Solution Approach 2:
The system enables self-service positioning accuracy improvement by allowing mobile terminals to form their own service groups and share a self-built base station. Users can independently establish their own differential GPS service without relying on external paid CORS services, achieving cost autonomy while maintaining high positioning accuracy.
4Measurement precision
If multiple mobile terminals each use independent base stations, then positioning accuracy is improved for each terminal, but overall system cost increases
Solution Approach 1:
The system merges multiple independent terminal-base station pairs into a single shared base station serving multiple terminals. This consolidation reduces the total number of base stations from N to 1, thereby reducing total system cost while each terminal still receives the differential correction data needed for high positioning accuracy.
Data Source
Figure 1
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AI summary
The present invention discloses a differential global positioning system and a positioning method thereof. The differential global positioning system includes a base station and at least one intelligent device, where the base station is configured to set first positioning data thereof when the base station is arranged at a fixed location, and the base station includes a first signal receiver; where the first signal receiver receives a satellite-based positioning signal sent by a satellite system to obtain second positioning data of the base station, and the base station obtains differential correction data according to a measurement error between the first positioning data and the second positioning data, and the base station is in communication connection with at least two intelligent devices to transmit the corresponding differential correction data to the at least two intelligent devices. The differential global positioning system and the positioning method are cost-effective.