Shared DGPS Base Station for Low-Cost Accurate Positioning
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Solution Overview
Problem
Current differential global positioning systems (DGPS) are costly for individual users due to the need for either a self-built base station or paid Continuously Operating Reference Stations (CORS) services, limiting accessibility and increasing usage costs.
Innovation Solution
A differential global positioning system comprising a base station and intelligent devices, where the base station communicates with multiple intelligent devices via a mobile station, transmitting differential correction data to improve positioning accuracy without the need for individual base stations, allowing for a regional network setup and flexible device management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a self-built base station is used for differential global positioning, then positioning accuracy is improved, but cost and device complexity increase significantly
Solution Approach 1:
The patent merges multiple receiver functions into a single base station. The base station simultaneously receives satellite signals for its own positioning and collects positioning data from multiple intelligent devices, processing differential correction data for all devices centrally rather than requiring each device to have its own base station.
Solution Approach 2:
The base station serves multiple functions: it acts as a reference receiver for differential correction, a communication hub for data exchange, and a centralized processing unit for multiple intelligent devices. This multi-functional design eliminates the need for separate base stations for each device.
2Measurement precision
If a self-built base station is used for differential global positioning, then positioning accuracy is improved, but usage cost increases
Solution Approach 1:
The patent merges multiple receiver functions into a single base station. The base station simultaneously receives satellite signals for its own positioning and collects positioning data from multiple intelligent devices, processing differential correction data for all devices centrally rather than requiring each device to have its own base station.
Solution Approach 2:
Instead of requiring each intelligent device to have its own base station hardware, the system creates virtual copies of the base station functionality through software implementation on a centralized platform, allowing multiple devices to share the same physical infrastructure.
3Measurement precision
If CORS service is used for differential global positioning, then positioning accuracy is improved, but usage cost increases due to paid service
Solution Approach 1:
The system enables self-service by allowing intelligent devices to autonomously establish communication with the base station and receive differential correction data without requiring paid CORS services. The base station provides open access to correction data for registered devices, eliminating the need for commercial subscription services.
4Adaptability or versatility
If multiple independent base stations are deployed for different areas, then positioning coverage is improved, but device complexity and cost increase
Solution Approach 1:
The base station serves multiple functions: it acts as a reference receiver for differential correction, a communication hub for data exchange, and a centralized processing unit for multiple intelligent devices. This multi-functional design eliminates the need for separate base stations for each device.
Solution Approach 2:
The system dynamically assigns intelligent devices to different base stations based on their location and coverage areas. A single base station can serve devices in its coverage area, and the system can adapt to changing device locations and coverage requirements without requiring fixed infrastructure for each area.
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.