Signal Receiving Time Correction for Time Walk Errors
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Solution Overview
Problem
Signal processing technologies face challenges in accurately determining the receiving time of signals due to amplitude fluctuations and interference, leading to reduced measurement accuracy in applications like atmospheric cosmic ray surveys and molecular imaging.
Innovation Solution
A time correction device comprising a time measurement component, a correction component, and a processing device that measures the receiving time of valid signals, collects correction information based on amplitude and duration, and determines a corrected receiving time using correlation coefficients, thereby reducing the time walk effect and interference impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a leading edge discriminator is used to measure the receiving time of signals, then the measurement process is simple and fast, but the measurement accuracy deteriorates due to the time walk effect caused by amplitude fluctuations
Solution Approach 1:
The patent introduces an intermediary correction mechanism between the leading edge discriminator and the final time measurement result. A correction value is calculated based on the signal amplitude and a pre-established correction curve, then applied to compensate for the time walk effect. This intermediary step allows the system to maintain the fast measurement capability of the leading edge discriminator while improving accuracy through amplitude-based correction.
Solution Approach 2:
The patent changes the measurement parameter from direct time measurement to a corrected time measurement that incorporates amplitude information. By establishing a correction curve that relates amplitude to time walk error, the system transforms the raw discriminator output into a corrected receiving time that compensates for amplitude fluctuations. This parameter transformation resolves the contradiction by using amplitude data to correct the time measurement error.
2Device complexity
If signal amplitude is allowed to fluctuate naturally, then the signal processing is simple, but the receiving time measurement accuracy deteriorates due to time walk effect
Solution Approach 1:
The patent implements a feedback mechanism where the signal amplitude is measured and used to determine a correction value that is applied to the receiving time measurement. The system continuously monitors amplitude fluctuations and adjusts the time measurement accordingly using a pre-established correction curve. This feedback loop allows the system to maintain simple signal processing while improving measurement accuracy through dynamic correction based on amplitude information.
3Ease of operation
If interference signals are present in the signal, then the signal transmission is straightforward, but the receiving time measurement accuracy deteriorates
Solution Approach 1:
The patent changes the approach from direct time measurement to a corrected measurement that incorporates multiple parameters including amplitude and interference characteristics. By establishing a correction curve that accounts for interference effects and using amplitude-based correction, the system maintains straightforward signal transmission while improving measurement accuracy through parameter-based compensation.
Data Source
AI summary
The present disclosure provides devices, systems, and methods for time correction. The device may include a first time measurement component configured to measure a receiving time of a valid signal; a correction component configured to collect correction information for correcting the receiving time of the valid signal; and a processing device configured to determine a corrected receiving time of the valid signal by correcting the receiving time of the valid signal based on the correction information.