Moving Object Positioning Using Synchronized GNSS and Relative Imaging
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Solution Overview
Problem
RTK-compatible GNSS receivers require complex real-time processing, leading to large, heavy, and expensive devices.
Innovation Solution
An information processing device that acquires reference and relative position information using a combination of imaging device and mobile body signals, allowing for accurate positioning by combining reference position information from an imaging device with relative position information between the imaging device and mobile body, and adding this information to captured images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RTK-compatible GNSS receiver is used to achieve high positioning accuracy, then positioning precision is improved, but device complexity, size, weight, and cost increase
Solution Approach 1:
The positioning system is divided into two functional parts: a reference station that performs complex RTK processing to generate correction data, and a mobile receiver that applies these corrections to achieve high accuracy without performing complex real-time processing itself. This segmentation allows the mobile device to be simpler while still achieving RTK-level accuracy.
Solution Approach 2:
Correction data from the reference station acts as an intermediary that bridges the gap between standard GNSS accuracy and RTK accuracy. The mobile receiver uses this intermediary correction information to improve positioning precision without needing to implement the full RTK processing complexity.
2Measurement precision
If RTK-compatible GNSS receiver is used to achieve high positioning accuracy, then positioning precision is improved, but device size and weight increase
Solution Approach 1:
The system segments the heavy processing workload from the mobile receiver and relocates it to a fixed reference station. The mobile receiver only needs to handle lightweight tasks of receiving correction data and applying corrections, significantly reducing its weight while maintaining high positioning accuracy.
3Measurement precision
If RTK-compatible GNSS receiver is used to achieve high positioning accuracy, then positioning precision is improved, but device cost increases
Solution Approach 1:
The system segments the expensive RTK processing functionality into a separate reference station infrastructure. Mobile receivers can be manufactured at lower cost since they don't need full RTK processing capability, while the expensive processing is centralized in the reference station that serves multiple users.
Solution Approach 2:
The reference station serves multiple mobile receivers simultaneously, providing RTK-level accuracy to many users. This multi-functionality amortizes the high cost of RTK processing infrastructure across multiple devices, making the overall system more cost-effective.
Data Source
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AI summary
The present invention accurately identifies the position of a moving object 3, such as an automobile. An information processing device 10 comprises: a reference position acquisition unit 103 which acquires reference position information 200 indicating the position of an image capturing device 2; and a position inference unit 106 which, on the basis of first position information 210 indicating the current position of the image capturing device 2 as calculated on the basis of a satellite positioning signal and second position information 310 indicating the current position of the moving object 3 moving in the surroundings of the image capturing device 2 on the basis of a satellite positioning signal temporally synchronised with the positioning signal for the first position information 210, acquires relative position information 230 indicating a positional relationship between the image capturing device 2 and the moving object 3, and outputs inferred position information 320 indicating the current position of the moving object 3 on the basis of the relative position information 230 and the reference position information 200.