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Title: Evaluation of infrasonic detection capability for the CTBT/IMS

Abstract

Evaluation of infrasonic detection capability for the International Monitoring System of the Comprehensive Test Ban Treaty (IMS/CTBT) is made with respect to signal analysis and global coverage. Signal analysis is anecdotally reviewed with respect to composite power, correlation and F-statistic detection algorithms. In the absence of adaptive pre-filtering, either cross-correlation or F-statistic detection is required. As an unbounded quantity, the F-statistic offers potentially greater sensitivity to signals of interest. With PURE state pre-filtering, power detection begins to become competitive with correlation and F-statistic detection. Additional application of simple post-filters of minimum duration and maximum bearing deviation results in unique positive detection of an identified impulsive infrasonic signal. Global coverage estimates are performed as a useful deterministic evaluation of networks, offering an easily interpreted network performance, which compliments previous probabilistic network evaluations. In particular, adequate coverage (2 sites), uniform coverage, and redundant coverage (3 to 4 sites) provide figures of merit in evaluating detection, location and vulnerability, respectively. Coverage estimates of the I60 network have been performed which indicate generally adequate coverage for the majority of the globe. Modest increase of station gain (increase of number of elements from 4 to 7) results in significant increase in coverage for mean signalmore » values. Ineffective sites and vulnerability sites are identified which suggest further refinement of the network is possible.« less

Authors:
;  [1];  [2]
  1. Los Alamos National Lab., NM (United States)
  2. Univ. of Alaska, Fairbanks, AK (United States). Geophysical Inst.
Publication Date:
Research Org.:
Los Alamos National Lab., NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
378791
Report Number(s):
LA-UR-96-2440; CONF-9609185-10
ON: DE96014232; TRN: AHC29620%%3
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 18. Seismic Research symposium on monitoring a Comprehensive Test Band Treaty (CTBT), Annapolis, MD (United States), 4-6 Sep 1996; Other Information: PBD: [1996]
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 35 ARMS CONTROL; NON-PROLIFERATION TREATY; VERIFICATION; NUCLEAR EXPLOSION DETECTION; ACOUSTIC DETECTION; NUCLEAR EXPLOSIONS; SOUND WAVES; SIGNAL CONDITIONING; SIGNAL-TO-NOISE RATIO; DATA ANALYSIS; WIND; NETWORK ANALYSIS; ACOUSTIC MEASUREMENTS

Citation Formats

Armstrong, W.T., Whitaker, R.W., and Olson, J.V. Evaluation of infrasonic detection capability for the CTBT/IMS. United States: N. p., 1996. Web.
Armstrong, W.T., Whitaker, R.W., & Olson, J.V. Evaluation of infrasonic detection capability for the CTBT/IMS. United States.
Armstrong, W.T., Whitaker, R.W., and Olson, J.V. 1996. "Evaluation of infrasonic detection capability for the CTBT/IMS". United States. doi:. https://www.osti.gov/servlets/purl/378791.
@article{osti_378791,
title = {Evaluation of infrasonic detection capability for the CTBT/IMS},
author = {Armstrong, W.T. and Whitaker, R.W. and Olson, J.V.},
abstractNote = {Evaluation of infrasonic detection capability for the International Monitoring System of the Comprehensive Test Ban Treaty (IMS/CTBT) is made with respect to signal analysis and global coverage. Signal analysis is anecdotally reviewed with respect to composite power, correlation and F-statistic detection algorithms. In the absence of adaptive pre-filtering, either cross-correlation or F-statistic detection is required. As an unbounded quantity, the F-statistic offers potentially greater sensitivity to signals of interest. With PURE state pre-filtering, power detection begins to become competitive with correlation and F-statistic detection. Additional application of simple post-filters of minimum duration and maximum bearing deviation results in unique positive detection of an identified impulsive infrasonic signal. Global coverage estimates are performed as a useful deterministic evaluation of networks, offering an easily interpreted network performance, which compliments previous probabilistic network evaluations. In particular, adequate coverage (2 sites), uniform coverage, and redundant coverage (3 to 4 sites) provide figures of merit in evaluating detection, location and vulnerability, respectively. Coverage estimates of the I60 network have been performed which indicate generally adequate coverage for the majority of the globe. Modest increase of station gain (increase of number of elements from 4 to 7) results in significant increase in coverage for mean signal values. Ineffective sites and vulnerability sites are identified which suggest further refinement of the network is possible.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1996,
month = 9
}

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