Timing Signal Output Device Elevation Angle Switching
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Solution Overview
Problem
Existing timing signal output devices face precision deterioration due to inadequate switching mechanisms based on satellite signal reception states, leading to inaccurate timing signal generation.
Innovation Solution
A timing signal output device that switches between modes using statistical value information derived from elevation angles of positioning satellites, allowing for precise selection between reference signal and clock signal-based timing signals, thereby reducing precision deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switching is performed based on DOP information or positioning precision indicators, then the device can switch between satellite signal-based and oscillator-based timing signals, but the precision of the timing signal deteriorates because the prior information does not reflect actual timing signal precision
Solution Approach 1:
The patent changes the parameter used for switching from positioning precision indicators (DOP) to elevation angle statistical values. This parameter change directly addresses the contradiction by using a metric that actually correlates with timing signal precision, thereby maintaining high precision while preserving the switching capability between signal sources.
2Measurement precision
If statistical processing of elevation angles is performed to improve switching accuracy, then the precision of timing signal generation is improved, but the device complexity increases due to additional processing requirements
Solution Approach 1:
The patent replaces complex positioning precision evaluation mechanisms with statistical processing of elevation angles. This substitution simplifies the overall system by using straightforward statistical calculations (average, median, or mode of elevation angles) instead of complex DOP-based precision assessment, thereby achieving high precision without proportionally increasing device complexity.
Data Source
AI summary
A timing signal output device includes a receiver configured to output a reference signal on the basis of satellite signals received from a plurality of positioning satellites, an oscillator configured to output a clock signal, and a processor configured to switch, on the basis of statistical value information concerning a statistical value obtained by performing statistical processing of elevation angles of the plurality of positioning satellites, a first mode for generating a timing signal based on the reference signal and a second mode for generating a timing signal based on the clock signal.