Contribution to Uncertainty Propagation Associated with On-Site Calibration of Infrasound Monitoring Systems

To improve the confidence and quality of measurements produced by regional and international infrasound monitoring networks, this work investigates a methodology for propagating uncertainty associated with on-site measurement systems. We focus on the propagation of sensor calibration uncertainties....

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2023-04, Vol.15 (7), p.1892
Main Authors: Demeyer, Séverine, Kristoffersen, Samuel K., Le Pichon, Alexis, Larsonnier, Franck, Fischer, Nicolas
Format: Article
Language:English
Subjects:
Algorithms
Azimuth
Calibration
Errors
Frequencies
Infrasound
infrasound monitoring
Instrumentation
Measurement
Methods
Monitoring
Monitoring systems
Monte Carlo method
Monte Carlo simulation
Noise propagation
Noise reduction
on-site calibration
Onsite
Propagation
Remote sensing
sensitivity study
Sensors
Technology application
Testing
Uncertainty
uncertainty propagation
Velocity
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Summary:To improve the confidence and quality of measurements produced by regional and international infrasound monitoring networks, this work investigates a methodology for propagating uncertainty associated with on-site measurement systems. We focus on the propagation of sensor calibration uncertainties. The proposed approach is applied to synthetic infrasound signals with known back azimuth and trace velocity, recorded at the array elements. Relevant input uncertainties are investigated for propagation targeting the incoming signals (noise), instrumentation (microbarometers, calibration system, wind noise reduction system), and the time-delay-of-arrival (TDOA) model (frequency band). Uncertainty propagation is performed using the Monte Carlo method to obtain the corresponding uncertainties of the relevant output quantities of interest, namely back azimuth and trace velocity. The results indicate that, at high frequencies, large sensor uncertainties are acceptable. However, at low frequencies (
ISSN:2072-4292
2072-4292
DOI:10.3390/rs15071892