Satellite Positioning Augmentation Parameter Switching

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional satellite positioning systems generate abnormal positioning augmentation information when unexpected ionospheric or tropospheric conditions occur, leading to decreased accuracy and prolonged distribution of incorrect data.

Innovation Solution

An information processing device with a monitor unit and selection unit that detects abnormalities in positioning augmentation information and switches to reserve parameter values to generate normal positioning augmentation information, minimizing the duration of inaccurate data distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a fixed parameter value is used for generating positioning augmentation information, then the system operation is simple, but abnormal positioning augmentation information is generated when unexpected ionospheric or tropospheric conditions occur

Engineering Contradiction:

Improvesystem operation simplicityVSAvoidpositioning augmentation information accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system dynamically switches between a fixed parameter value and multiple candidate parameter values based on the quality of positioning augmentation information. The monitor unit detects abnormalities and triggers switching to alternative parameter values, making the system adaptable to changing ionospheric and tropospheric conditions while maintaining operational simplicity through automated decision-making.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter value used for generating positioning augmentation information from a fixed value to a dynamically selectable value among multiple candidates. When abnormalities are detected, the system switches to different parameter values (e.g., different ionospheric or tropospheric delay models) to maintain accuracy under varying atmospheric conditions.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If a fixed parameter value is used for generating positioning augmentation information, then the device complexity is low, but the system cannot adapt to unexpected atmospheric conditions

Engineering Contradiction:

Improvedevice complexityVSAvoidadaptability to atmospheric conditions

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The system prepares multiple candidate parameter values in advance before atmospheric abnormalities occur. These candidate values (representing different ionospheric or tropospheric delay models) are pre-configured and ready for immediate switching, eliminating the need for complex real-time atmospheric analysis while enabling rapid adaptation to unexpected conditions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The monitor unit continuously monitors the quality of positioning augmentation information and provides feedback to the selection unit. When abnormalities are detected, this feedback triggers switching to alternative parameter values, creating a closed-loop system that adapts to atmospheric conditions without requiring complex predictive models.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If abnormal positioning augmentation information is generated, then the positioning accuracy deteriorates, but the abnormality persists for a long time relative to the generation period

Engineering Contradiction:

Improvepositioning accuracyVSAvoidduration of abnormal data distribution

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

When abnormalities are detected in positioning augmentation information, the system rapidly switches to alternative parameter values to bypass the abnormal state. This rapid switching minimizes the time period during which abnormal information is distributed, quickly transitioning from inaccurate to accurate positioning data even when atmospheric conditions remain abnormal.

Inventive Principle:

Principle #21Skipping (Rushing through)

Solution Approach 2:

The system maintains multiple candidate parameter values as backup options in advance. When abnormalities occur, these pre-prepared alternatives immediately cushion against the impact of abnormal positioning augmentation information, preventing prolonged periods of inaccurate positioning without requiring time-consuming analysis or recalculation.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS11774598B2Information processing device, information processing method, and computer readable medium

Publication Date: 2023.10.03 MITSUBISHI ELECTRIC CORP

AI summary

A monitor unit (25) monitors positioning augmentation information for correction of satellite positioning errors, the positioning augmentation information being generated by an augmentation information generation device with use of a specified parameter value being a parameter value which is specified. In a case where an abnormality is detected in the positioning augmentation information by the monitor unit (25), a selection unit (26) selects a reserve parameter value that is to substitute for the specified parameter value, from among a plurality of reserve parameter values being a plurality of parameter values that are different from the specified parameter value and commands the augmentation information generation device to use the selected reserve parameter value as a new specified parameter value.