Positioning Device Bandwidth Reduction via Reinforcement Information Adjustment
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Solution Overview
Problem
Current satellite positioning systems face challenges in achieving high accuracy while maintaining communication bandwidth, as the transmission of reinforcement information required for centimeter-level accuracy consumes significant bandwidth, constraining its use for other services.
Innovation Solution
A positioning device that generates and transmits reinforcement information at a reduced data rate, specifically degrading centimeter-level information to decimeter-level information, allowing for effective communication bandwidth usage without compromising positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reinforcement information is transmitted at high data rate to achieve centimeter-level positioning accuracy, then positioning accuracy is improved, but communication bandwidth is constrained for other services
Solution Approach 1:
The patent applies partial action by transmitting only the necessary portion of reinforcement information at high data rate while degrading other information to lower data rates. Specifically, centimeter-level correction information is transmitted at 2 kbps while decimeter-level information is transmitted at 250 bps, achieving a balance between positioning accuracy and bandwidth consumption
Solution Approach 2:
The patent changes the data rate parameter of reinforcement information based on positioning accuracy requirements. By adjusting the information degradation level, the system can switch between centimeter-level accuracy (2 kbps) and decimeter-level accuracy (250 bps), allowing flexible adaptation to different application scenarios
2Quantity of substance
If reinforcement information is degraded to decimeter-level to reduce data volume, then communication bandwidth is preserved, but positioning accuracy decreases from centimeter-level to decimeter-level
Solution Approach 1:
The patent applies local quality by providing different levels of information quality to different applications. High-precision centimeter-level reinforcement information is provided for applications requiring maximum accuracy, while decimeter-level information is provided for applications where bandwidth conservation is more important, allowing each application to receive appropriately matched quality
Data Source
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AI summary
A reinforcement information adjustment unit (102) reduces an amount of information in reinforcement information by combining: update cycle adjustment processing (1021) to set an update cycle of the reinforcement information to be an integer multiple of a predetermined update cycle; geographic interval error value adjustment processing (1022) to reduce the number of geographic interval error values by selecting from among a plurality of the geographic interval error values each of which is an error at every predetermined geographic interval out of a plurality of error values, a geographic interval error value at every geographic interval that is an integer multiple of the predetermined geographic interval; and bit count adjustment processing (1023) to reduce a bit count of the error value for each error value. A reinforcement information output unit (103) outputs, to an output destination, reinforcement information after being reduced in the amount of information by the reinforcement information adjustment unit (102).