Center-Based GNSS Correction for Multi-Vehicle Positioning
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Solution Overview
Problem
Existing vehicle movement data analysis systems face challenges in providing high-accuracy position information to users, as they rely on GNSS data that may not be precise enough, requiring each vehicle to have a configuration for correction, which can be resource-intensive and inefficient, especially when managing multiple vehicles.
Innovation Solution
An information management system that includes a center receiving GNSS position information from multiple vehicles, using high-precision position information from a second vehicle to calculate corrected position information for a first vehicle, which is then recorded and provided to users, eliminating the need for individual vehicle corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each vehicle is configured with correction capabilities to improve position accuracy, then measurement precision improves, but device complexity and resource consumption increase
Solution Approach 1:
A correction information management server acts as an intermediary between vehicles and users. The server receives GNSS position information from multiple vehicles, calculates corrected position information using reference position data, and provides this corrected information to users. This eliminates the need for each vehicle to have built-in correction capabilities, thereby improving position accuracy without increasing device complexity at the vehicle level.
Solution Approach 2:
The correction information management server performs multiple functions: collecting GNSS position information from various vehicles, calculating corrected position information using reference data, storing corrected information, and providing it to users. This centralized multi-functional approach replaces what would otherwise require individual correction configurations in each vehicle, achieving both improved accuracy and reduced complexity.
2Measurement precision
If correction information is calculated and stored for each vehicle to improve accuracy, then measurement precision improves, but loss of information and storage requirements increase
Solution Approach 1:
The server calculates corrected position information once using reference position data and makes this corrected information available to multiple vehicles and users. Rather than storing separate correction data for each vehicle individually, the system creates a universal corrected position information database that serves multiple purposes, reducing overall information storage requirements while maintaining high accuracy.
Solution Approach 2:
The system creates a reference position information database that serves as a master copy. When correcting position data for any vehicle, the system copies and applies the relevant correction information from this reference database rather than maintaining separate correction records for each vehicle, thereby reducing information redundancy and storage overhead.
3Measurement precision
If individual vehicle corrections are implemented to improve accuracy, then measurement precision improves, but productivity and system efficiency decrease
Solution Approach 1:
The correction information management server centralizes the correction calculation process, acting as an intermediary that processes position correction data once and distributes the corrected information to multiple vehicles and users. This approach improves system efficiency by avoiding redundant correction calculations that would occur if each vehicle performed its own corrections independently.
Solution Approach 2:
The system calculates and stores corrected position information in advance using reference position data before it is needed by vehicles or users. This preliminary action allows rapid provision of accurate position information without requiring real-time correction calculations for each vehicle, thereby improving system productivity and efficiency.
Data Source
AI summary
The information management system includes a first vehicle, a second vehicle, and a center. The information management system manages information provided from the center to a user. The center performs the following processes. The center receives first vehicle information and second vehicle information. The center acquires correction information indicating a difference between the second GNSS position information and the high-precision position information. The second GNSS position information and the high-precision position information are included in the second vehicle information. The center calculates corrected position information indicative of the position of the first vehicle using the first GNSS position information included in the first vehicle information and the correction information. The corrected position information has a higher accuracy than an accuracy of the first GNSS position information The center records the corrected position information.