Air Force Institute of Technology The AFIT of Today is the Air Force - - PowerPoint PPT Presentation

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air force institute of technology

Air Force Institute of Technology The AFIT of Today is the Air Force - - PowerPoint PPT Presentation

Oct 27, 2022 210 likes •409 views

Air Force Institute of Technology The AFIT of Today is the Air Force of Tomorrow. Optimization of the Progressive Multi-Channel Correlation Algorithm for Infrasound Nuclear Treaty Monitoring Anthony Runco, 2Lt, USAF James Louthain, Lt Col,

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Air Force Institute of Technology

Optimization of the Progressive Multi-Channel Correlation Algorithm for Infrasound Nuclear Treaty Monitoring

Anthony Runco, 2Lt, USAF James Louthain, Lt Col, PhD, USAF Dean Clauter, PhD

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Ground Truth Set Stations

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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What is PMCC? Correlation Detector Relations

Closure Relation
Consistency Threshold

[1]

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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What is WinPMCC? Consistency-Satisfied Detections

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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What is WinPMCC? Family-Building Process

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Family Building Process Threshold to Determine Families

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Consistency Threshold and the Receiver Operating Characteristic

How does varying the consistency threshold affect detector performance?

[2]

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Establishing a Ground Truth (GT) Set

WinPMCC
InfraMonitor
Stephen Arrowsmith and Rod Whitaker
Los Alamos National Laboratory
SeaTools
FK Trend
Air Force Technical Applications Center (AFTAC)

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Consistency Threshold and the Receiver Operating Characteristic

Consistency Threshold (sec)

Back to Summary

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Optimum Family Size Detection Threshold

Only the largest

and most stable families are preserved…

Consistency: 0.1 sec

[2]

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Likelihood Ratio Test

Likelihood Ratio Test (LRT)
Ground Truth True Event Families and Non-Event Families
rganized by Family Size [#pixels/family]

[3]

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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True Event and Non-Event Conditional PDFs

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Maximum A Posteriori Detection

Back to Summary

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Bayes Approach and Risk Minimization

CR = 0: no SOI present,

and correctly declare one not to be

CTD = 10: SOI present,

declare SOI presence, and take action

CFA = 20: no SOI

present, but declare one to be

CMD = 100: SOI present,

but declare one not to be Back to Summary

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Optimum Threshold ROC Comparison

Back to Summary

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Summary of Research Contributions: Monitoring Agency and Analyst Perspectives

Ground Truth Set – Could be tailored to infrasound stations
PMCC Algorithm
Consistency Threshold and ROC Curve Analysis
Consistency Threshold and the Receiver Operating Character...
Optimum Family Size & Detection Threshold
Maximum A Posteriori Detection
Bayes Approach and Risk Minimization
Optimum Threshold ROC Comparison

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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References

[1] Y. Cansi and A. Le Pichon, "Infrasound Event Detection Using the Progressive Multi-Channel Correlation Algorithm," in Handbook of Signal Processing in Acoustics, New York, Springer, 2008. [2] A. Le Pichon and Y. Cansi, "Progressive Multi-Channel Correlation: Technical Documentation," CTBTO, 2003. [3] B. Sklar and P. K. Ray, Digital Communications: Fundamentals and Applications, New York: Pearson, 2009.

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Air University: The Intellectual and Leadership Center of the Air Force Aim High…Fly - Fight - Win

The AFIT of Today is the Air Force of Tomorrow.

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Questions?