Positioning Integrity Control Using Hierarchical Error Alarms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current positioning systems lack a feasible solution for ensuring positioning integrity, leading to poor accuracy and reliability due to unaddressed error sources and the absence of an effective alarm mechanism for system positioning errors.
Innovation Solution
A hierarchical alarm mechanism is introduced to control positioning integrity by identifying and correcting errors in real time, using a location management device or terminal device to assess positioning results against preset conditions and send warnings before system unavailability, enabling error correction and ensuring high reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional positioning systems operate without an alarm mechanism, then the system structure remains simple, but positioning integrity and reliability deteriorate due to inability to detect and correct errors in time
Solution Approach 1:
The patent implements preliminary action by establishing a hierarchical alarm mechanism that detects positioning errors before they compromise integrity. The system continuously monitors positioning results against integrity thresholds and generates alarms in advance (first alarm level for approaching thresholds, second alarm level for exceeded thresholds), enabling corrective actions to be taken before system failure occurs.
Solution Approach 2:
The patent applies feedback by creating a closed-loop system where positioning results are continuously fed back to the location management device for integrity assessment. The device compares positioning results against predetermined thresholds and generates appropriate alarm levels, which then feed back into the positioning process to trigger corrections or service adjustments, maintaining positioning integrity through continuous monitoring and response.
2Measurement precision
If the system waits until positioning error exceeds threshold before alarming, then the alarm mechanism is simple, but positioning accuracy deteriorates due to late detection of errors
Solution Approach 1:
The patent segments the alarm mechanism into two distinct alarm levels based on the degree of error threshold violation. The first alarm level triggers when positioning error approaches the integrity threshold (within a predetermined range), while the second alarm level triggers when the error exceeds the threshold. This segmentation enables early warning and corrective action before critical failure, improving positioning accuracy without requiring an overly complex single-threshold system.
Solution Approach 2:
The patent implements preliminary action by establishing a hierarchical alarm mechanism that detects positioning errors before they compromise integrity. The system continuously monitors positioning results against integrity thresholds and generates alarms in advance (first alarm level for approaching thresholds, second alarm level for exceeded thresholds), enabling corrective actions to be taken before system failure occurs.
3Reliability
If the system provides detailed error information and hierarchical alarms, then positioning reliability improves, but information processing complexity increases
Solution Approach 1:
The patent applies local quality by providing different levels of detail in error information based on the alarm level. For first alarm level (approaching threshold), the system provides preliminary warning information with less detail. For second alarm level (exceeded threshold), the system provides comprehensive error information including specific error sources, magnitude, and recommended corrections. This differentiated information provision improves reliability where needed while avoiding unnecessary processing complexity for minor deviations.
Data Source
AI summary
A method for controlling positioning integrity includes: A location management device (103) receives a first message sent by a terminal device (101), where the first message includes a first parameter set, the first parameter set includes measurement information and/or error information that are/is related to location information of the terminal device (101), and the error information is related to the positioning integrity. The location management device (103) obtains a first positioning result based on the first parameter set and/or positioning assistance data, where the first positioning result includes location information and/or integrity information of the terminal device (101), the integrity information includes the error information and/or alarm information, and the alarm information includes a determining result obtained by comparing the first positioning result with a preset determining condition.