GNSS Reference Station Self-Positioning via PPP-RTK

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Solution Overview

Problem

Conventional GNSS reference stations require precise initial surveying and continuous re-measurement due to diastrophism and crustal deformation, necessitating relative positioning technologies that rely on other reference stations, which limits their independence and installation flexibility.

Innovation Solution

A self-contained GNSS reference station with a positioning processor, signal processor, and transmitter that calculates and transmits its own precise position using satellite-based high-precision independent positioning technology, such as PPP-RTK, eliminating the need for initial surveying and re-measurement by generating and transmitting error correction information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional relative positioning techniques (RTK, DGNSS) are used, then positioning accuracy can be achieved, but the reference station requires precise initial surveying and continuous re-measurement, increasing operational complexity and cost

Engineering Contradiction:

Improvepositioning accuracyVSAvoidoperational complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The reference station performs self-positioning using satellite-based high-precision independent positioning technology (PPP-RTK), eliminating the need for external surveying services or reliance on other reference stations. The station autonomously determines its own position and generates correction information, reducing operational complexity while maintaining accuracy

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical surveying methods with satellite-based GNSS positioning technology. Instead of requiring physical surveying equipment and manual measurement processes, the system uses GNSS signals to achieve high-precision positioning, thereby reducing operational complexity and cost

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If relative positioning technology is used, then positioning can be achieved, but the reference station cannot independently determine its position, reducing installation flexibility

Engineering Contradiction:

Improvepositioning accuracyVSAvoidinstallation flexibility

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The reference station independently determines its own position using satellite-based positioning technology, eliminating dependence on other reference stations or external surveying services. This self-positioning capability enables flexible installation at any suitable location without requiring proximity to existing reference stations

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The reference station is equipped with both positioning receiver functionality and error correction generation functionality, making it a universal device that can operate independently. It can serve as both a positioning reference and a correction source, enhancing installation flexibility and system versatility

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If continuous monitoring and correction of reference station position is performed, then positioning accuracy is maintained, but time and resources are consumed

Engineering Contradiction:

Improvepositioning accuracyVSAvoidtime consumption

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The reference station continuously monitors and corrects its own position in real-time using satellite-based positioning, ensuring positioning accuracy is maintained without interruption. The system automatically generates and transmits correction information continuously, eliminating the need for manual intervention or periodic re-surveying

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The reference station uses feedback from its own positioning measurements to generate correction information that is transmitted to mobile stations. This closed-loop feedback mechanism ensures that position changes are continuously accounted for, maintaining accuracy while automating the correction process to reduce time consumption

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12169243B2High precision independent positioning apparatus for reference station

Publication Date: 2024.12.17 MAGELLAN SYST JAPAN

AI summary

An apparatus provides independent precise positioning for a reference station including a GNSS antenna and a GNSS receiver. The GNSS receiver generates GNSS data based on a plurality of GNSS signals received at the GNSS antenna, including GNSS signals having augmentation information. The apparatus includes a positioning processor, a signal processor, and a signal transmitter. The positioning processor calculates a current position of the reference station based on GNSS observation data and GNSS augmentation data obtained from the augmentation information included in the received GNSS signals, without using position information of another reference station, whereby the reference station is independently installed at a desirable location without surveying or measuring the desirable location. The signal processor generates error correction information including the current position of the reference station in a predetermined data format such as RTCM or CMR, based on the GNSS augmentation data.