Satellite Time Reception with Leap Second Update During Positioning
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Solution Overview
Problem
Existing electronic watches face challenges in accurately adjusting for leap seconds due to irregular timing of their implementation, which current technologies fail to address efficiently.
Innovation Solution
A satellite radio wave receiving device with a receiver, processor, and memory system that retains leap second information, allowing for continuous positioning and accurate leap second adjustments by comparing and updating leap second information without erasing previously acquired data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If leap second information is acquired by erasing previously acquired data and receiving new transmitted radio waves, then the latest leap second information can be acquired without fail, but the positioning operation time increases and continuous positioning is interrupted
Solution Approach 1:
The system performs preliminary acquisition of leap second information during continuous positioning operations without erasing previously acquired data. The receiver maintains leap second information in memory and continues positioning operations simultaneously, preparing the information for later verification and update without interrupting the positioning flow.
Solution Approach 2:
The positioning operation continues uninterrupted while leap second information is acquired and verified. The receiver maintains continuous satellite signal reception and positioning calculation, and the leap second information is updated in the background without stopping the positioning function, ensuring continuous useful action.
2Measurement precision
If previously acquired data is erased to acquire latest leap second information, then data accuracy is improved, but device complexity and operation complexity increase
Solution Approach 1:
The system automatically manages leap second information without requiring manual intervention. The receiver autonomously acquires, verifies, and updates leap second information by comparing with previously stored data, and automatically performs the update when newer information is detected, making the data management process self-service and reducing operational complexity.
Solution Approach 2:
The system uses feedback by comparing newly acquired leap second information with previously stored information to determine whether an update is necessary. The receiver checks if the newly acquired information is newer than the stored information and only updates when needed, using this feedback mechanism to simplify the data management process and avoid unnecessary operations.
3Duration of action of stationary object
If leap second information is retained during continuous positioning, then positioning continuity is maintained, but the ability to determine newer information becomes difficult
Solution Approach 1:
The system replaces manual data management with automated electronic verification processes. The receiver automatically compares newly acquired leap second information with stored information using electronic data processing, determining whether the new information is newer based on verification results, thus eliminating the difficulty of manual detection and measurement.
Solution Approach 2:
The system creates and maintains copies of leap second information in memory during continuous positioning. By retaining copies of previously acquired information and comparing them with newly acquired data, the system can determine whether newer information has been received without interrupting positioning operations, solving the detection difficulty while maintaining continuity.
Data Source
AI summary
The present disclosure is provided to correctly adjust the leap second information while avoiding the increase in positioning time. Provided is a satellite radio wave receiving device including: a receiver that performs an acquisition operation of receiving a transmitted radio wave from a positioning satellite and acquiring information contained in the transmitted radio wave; one or more processors; and one or more memories in which leap second information related to a leap second adjustment may be stored, wherein the receiver retains the leap second information last acquired by the acquisition operation and wherein the one or more processors perform the following processes according to instructions stored in the one or more memories: activating the receiver in at least two modes including a first mode in which the acquisition operation is performed for continuous positioning; in the case of activating the receiver in the first mode, starting the acquisition operation without erasing the leap second information that the receiver retains and acquiring the leap second information that the receiver retains after the end of the first mode operation, and in the case where the acquired leap second information for this time is determined to be newer than the leap second information stored in the one or more memories, storing the leap second information for this time in the one or more memories; and performing a leap second adjustment for the counted current date and time, based on the leap second information lastly stored in the one or more memories.