Multi-Satellite Navigation Position Validation
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Solution Overview
Problem
Conventional navigation systems for motor vehicles often fail to achieve high-precision positioning, particularly in environments with interference, such as built-up or wooded areas, and lack reliability for precise navigation and automated driving applications.
Innovation Solution
A method and device that combine position data from multiple navigation satellite systems (GPS, Galileo, GLONASS, BeiDou) with inertial measurements and certified correction data to validate and ensure high-precision navigation positions, using multiple monitoring mechanisms to assess deviations and plausibility, thereby enhancing reliability and precision to less than 3 meters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional navigation satellite systems are used for positioning, then a precision of 3 m or more can be achieved, but the positioning reliability is insufficient for motor vehicle applications
Solution Approach 1:
The positioning system is segmented into multiple independent satellite systems (GPS, Galileo, GLONASS, BeiDou) with separate receivers for each system. This segmentation allows independent evaluation and validation of each system's position data, improving overall reliability by not depending on a single satellite system
Solution Approach 2:
Position data from multiple different navigation satellite systems are merged and combined in a validation process. The device compares positions from GPS, Galileo, GLONASS, and BeiDou systems simultaneously, using the combined information to achieve more reliable and precise positioning than any single system could provide alone
2Measurement precision
If multiple navigation satellite systems are combined with validation mechanisms, then positioning precision of less than 3 m is achieved, but the device complexity increases
Solution Approach 1:
The validation device performs multiple functions using a single integrated system: it receives position data from multiple satellite systems, calculates individual positions from each system, compares these positions for consistency, validates the data quality, and outputs a reliable navigation position. This multi-functionality reduces the need for separate dedicated systems for each function
Solution Approach 2:
The system performs self-validation by comparing its own position calculations from multiple satellite systems against each other. The device automatically detects inconsistencies and validates data quality without requiring external reference systems, making the complexity management self-contained
Data Source
AI summary
The invention relates to a navigation system for a motor vehicle for ascertaining a navigation position, having: a plurality of receivers for receiving respective position data of a plurality of different navigation satellite systems, an inertial measuring unit for ascertaining an inertial position of the navigation system, a receiving unit for receiving correction data, an additional receiving unit for receiving certified position data, a device which is coupled to the plurality of receivers, the inertial measuring unit, the receiving unit, and the additional receiving unit so as to transmit signals, wherein the device is designed to ascertain the navigation position on the basis of the position data, the inertial position, the correction data, and the certified position data. The invention additionally relates to a method which can be carried out by the navigation device in particular.