Carrier Phase Positioning with Delay and Clock Error Compensation
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Solution Overview
Problem
Current carrier phase differential positioning methods fail to meet the increasing demands for high accuracy in complex scenarios due to unaccounted factors like initial phase, hardware delay, and clock error, leading to inaccurate positioning results.
Innovation Solution
A positioning method that processes a first phase difference based on initial phase, hardware delay, and clock error to obtain a target phase difference, minimizing their impact and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier phase differential positioning is used to simplify the positioning process, then positioning speed is improved, but positioning accuracy deteriorates due to unaccounted factors like initial phase, hardware delay, and clock error
Solution Approach 1:
The patent applies preliminary action by pre-measuring and recording the initial phase, hardware delay, and clock error parameters before performing positioning calculations. The receiving device obtains these parameters in advance from the transmitting device, allowing them to be compensated for during the positioning process rather than requiring complex real-time measurements, thus maintaining fast positioning speed while improving accuracy.
2Measurement precision
If complex scenarios require more reported parameters to improve positioning accuracy, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent reduces device complexity by performing preliminary measurements of initial phase, hardware delay, and clock error at the transmitting device before signal transmission. These pre-measured parameters are then included in the broadcast signal, allowing the receiving device to perform accurate positioning without needing complex measurement capabilities, thus achieving high accuracy while maintaining simple receiving device architecture.
Data Source
AI summary
A positioning method and a communications device are provided. One example method includes: receiving first information by a first device, wherein the first information indicates a first parameter of a second device, and the first parameter is related to positioning of the first device; and processing, by the first device, a first phase difference for a plurality of second devices based on the first parameter, to obtain a target phase difference, wherein the target phase difference is used for positioning the first device.