Server Map Update Using Raw Vehicle Satellite Data
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Solution Overview
Problem
Current methods for creating and updating navigation maps are costly due to the need for specialized vehicles equipped with expensive, high-precision measurement technology, and there is a desire to reduce effort and costs by utilizing normal vehicles to collect and process map data.
Innovation Solution
A method where vehicles send raw satellite navigation data packets to a server for processing, allowing the server to calculate and update map data, using standard satellite navigation receivers and combining the data with vehicle dynamics information to achieve precise map updates without the need for expensive dual-frequency receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specialized vehicles with high-precision measurement technology are used, then map accuracy is improved, but hardware complexity and costs increase
Solution Approach 1:
The patent uses standard satellite navigation receivers in mass vehicles to collect raw data, which is then processed on a server to recreate the high-precision mapping function. Instead of every vehicle having expensive specialized hardware, the system copies the essential measurement capability to ordinary vehicles while maintaining accuracy through centralized processing.
Solution Approach 2:
The server acts as an intermediary that receives raw satellite navigation data from multiple vehicles and performs the complex calculations needed to generate accurate map data. This mediator consolidates the computational burden, allowing simple vehicles to contribute data without needing sophisticated onboard processing hardware.
2Measurement precision
If specialized vehicles with expensive measurement technology are used, then map accuracy is improved, but costs increase
Solution Approach 1:
The patent replaces expensive, specialized measurement equipment with inexpensive standard satellite navigation receivers that are already present in mass-produced vehicles. By using cheap, widely available components and leveraging data from many vehicles, the system achieves high-precision mapping at a fraction of the cost of traditional specialized vehicles.
Solution Approach 2:
The invention makes standard satellite navigation receivers perform the additional function of map data collection. Ordinary vehicles equipped with standard receivers contribute to mapping efforts, transforming a single-function device into a multi-functional tool that serves both navigation and map creation purposes.
3Measurement precision
If raw data is transmitted from all vehicles, then map precision is improved, but data transmission volume increases
Solution Approach 1:
The patent extracts only the essential raw satellite navigation data needed for map generation, rather than transmitting complete navigation datasets. By selecting and transmitting only the specific raw measurements required for map precision, the system reduces data volume while maintaining the ability to generate accurate maps on the server.
Data Source
Figure 1
AI summary
The invention relates to a method for transmitting data from a vehicle to a server, raw data from the satellite navigation system being transmitted therewith. The invention also relates to a method for updating a map using a server.