Some Applications of a Mixed Signal Processor

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Abstract:

A technique to process array data has been developed to determine when a second signal is hidden in the coda of a primary signal and to estimate the waveform of the two signals. The effectiveness of the mixed-signal processor has been demonstrated by operating on various possible mixed signals formed from recordings of earthquakes at Tonga in the South Pacific and at the Fox Islands in the Aleutians. For small arrays the processor is found to be substantially superior to simple beamforming. The distortion introduced by the use of finite time filters is found to be negligible.

Author(s):
Shumway, R. H.
Author Organization(s):
TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA LAB
Pagination:
0050

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SDL-280
Contract/Grant Number(s):
F33657-72-C-0009, ARPA ORDER-1714
Project Number(s):
VT/2706, ARPA-2F10
Monitor Series:
DARPA
 Subject Terms
Joint Capability Areas:
JCA_2_Battlespace Awareness; JCA_2.2.1_Signals Collection; JCA_2.2_Collection; JCA_6.3.3_Spectrum Management; JCA_6_Net Centric; JCA_5.3_Planning; JCA_5_Command and Control; JCA_6.3_Net Management; JCA_3.2_Engagement; JCA_3_Force Application; JCA_6.1_Information Transport
Communities of Interest:
Sensors
Descriptor(s):
*SEISMOLOGICAL STATIONS, *UNDERGROUND EXPLOSIONS, ALEUTIAN ISLANDS, DATA PROCESSING, DETECTION, EARTHQUAKES, NETWORKS, NUCLEAR EXPLOSIONS, PACIFIC OCEAN ISLANDS, RECORDING SYSTEMS, STATISTICAL ANALYSIS
Field(s)/Group(s):
Seismology, Seismic Detection and Detectors
Keyword(s):
MAXIMUM LIKELIHOOD ESTIMATION, SEISMIC ARRAYS, SIGNAL PROCESSING, VELA UNIFORM
Report Date:
1972 Jan 05