GNSS Positioning Accuracy via RTCM Correction Data

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Solution Overview

Problem

Existing technologies using GNSS for positioning moving objects face inaccuracies due to system errors, accidental errors, and the need for precise position data to minimize positional errors and survey inaccuracies.

Innovation Solution

An apparatus and method that utilize GNSS position signals from multiple satellites, combined with position correction data from reference stations, to acquire precision position data of a mobile device. This data is then used to measure distances to other mobile devices, work sections, and danger areas, triggering danger notifications when thresholds are met.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If standard GNSS positioning is used, then the system is simple and easy to operate, but the positioning accuracy is poor with errors up to 15 meters

Engineering Contradiction:

Improvepositioning accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces reference stations as intermediary elements that receive GNSS signals and generate correction data. These reference stations act as mediators between the satellite system and the mobile device, providing correction information that eliminates systematic errors without requiring direct modification of the mobile device's GNSS receiver

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system implements feedback by continuously receiving correction data from reference stations and applying it to update the position of the mobile device. The correction data provides feedback on the accuracy of GNSS positioning, enabling real-time improvement of position measurements through iterative correction

Inventive Principle:

Principle #23Feedback

2Measurement precision

If DGNSS or RTK methods are used to improve accuracy, then positioning precision reaches meter or centimeter level, but the system complexity and computational requirements increase

Engineering Contradiction:

Improvepositioning accuracyVSAvoidoperational simplicity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The mobile device automatically receives and applies correction data from reference stations without requiring user intervention for calibration or configuration. The system performs self-correction of positioning errors by autonomously processing correction data, making high-precision positioning as easy to use as standard GNSS

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The reference stations serve multiple functions: they receive GNSS signals, calculate correction data for systematic errors, and provide this correction information to mobile devices. This multi-functionality consolidates complex operations into a universal platform that simplifies the overall system

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If position correction data from multiple reference stations is applied, then positioning accuracy reaches centimeter level, but data processing time and computational load increase

Engineering Contradiction:

Improvepositioning accuracyVSAvoiddata processing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

Reference stations pre-calculate correction data based on their received GNSS signals and known positions. This preliminary computation of correction values eliminates the need for real-time complex calculations when the mobile device needs positioning, allowing rapid application of pre-computed corrections

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent extracts only the essential correction data from the reference stations and transmits this condensed information to mobile devices. By separating the computationally intensive correction calculation (performed at reference stations) from the position application (performed at mobile devices), the system minimizes data processing time at the mobile end

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20250123401A1Apparatus and method for identifying position of moving object on basis of GNSS and notifying of dangerous accidents

Publication Date: 2025.04.17 HANWHA CORP

AI summary

Proposed is an apparatus and method for identifying a position of a moving object on the basis of the Global Navigation Satellite System (GNSS) and notifying of dangerous accidents. The apparatus includes a GNSS position information data receiving unit receiving current position information data of a mobile device by receiving each GNSS position signal from a plurality of GNSS satellites, a Radio Technical Commission for Maritime Services (RTCM) position correction data receiving unit receiving position correction data of the mobile device in the form of an RTCM stream through a Network Transport of RTCM via Internet Protocol (NTRIP), a precision position data acquisition unit acquiring precision position data of the mobile device, and a diagram display unit displaying the acquired precision position data of the mobile device, a position of another mobile device positioned within a predetermined range, a work section, and a danger area on a diagram.