Field test of a post-disaster communication system

Ristenbatt, Marlin P.; Holland-Moritz, E. K; Metzger, K.

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners. As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.

i

Field test of a post-disaster communication system

December 1983
By Ristenbatt, Marlin P. ; Holland-Moritz, E. K ; Metzger, K.

English

Details You May Also Like

Details:

Personal Author:

Ristenbatt, Marlin P. ; Holland-Moritz, E. K ; Metzger, K.

Ristenbatt, Marlin P. ; Holland-Moritz, E. K ; Metzger, K. Less -
Corporate Authors:

United States. Bureau of Mines. ; Pittsburgh Mining and Safety Research Center. ; Cooley Electronics Laboratory.

United States. Bureau of Mines. ; Pittsburgh Mining and Safety Research Center. ; Cooley Electronics Laboratory. Less -
Description:

A new post disaster communication and location system using through-the-earth electromagnetic wave propagation was tested at the Bureau of Mines Lake Lynn Experimental Mine. Successful detection of the signal, estimated to be at a signal-to-noise ratio (SNR) of -30 dB, was accomplished using a coherent integration time of 4.46 minutes. The transmitted waveform consisted of a repeating pseudonoise maximal length sequence phase modulating a 1,950-Hz carrier. The receiver used a sliding-window matched filter, optimal for signal known exactly except for phase and starting time, implemented via a special purpose processor. Parallel processing permits adaptive signaling where the detection (integration) time is determined by the actual input SNR encountered. The field test demonstrates a trapped miner detection system that is about 36 dB more sensitive than the current pulsed system. This increased sensitivity permits some desired combination of increased range, shorter detection time, and reduced transmitter power or antenna-size. The combination of pulse-compression-type signal, coherent integration , parallel processing, and output peak-detection algorithms permits implementation of an ultrareliable detection system. The same combination is compatible with digital pulse position modulation and emitter position location strategies.

Performed by Cooley Electronics Laboratory, University of Michigan under contract J0123030 with the United States Bureau of Mines, Pittsburgh Mining & Safety Research Center.
Subjects:

[+]

Mine Communication System/Testing Mine Rescue Work/Equipment And Supplies
Document Type:

Report
Funding:

J0123030
Pages in Document:

51 numbered pages
Resource Number:

Open file report (United States. Bureau of Mines) ; 1984-182;Mining research contract report;
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

[+]

urn:sha-512:695273b503906b19b0ffc4693112fc659adbca2d14c47dc24b0f4ca49d70658d3f67452b8c1740c9a2b6fc473370686489df4fad209bf5a9a0c637c9656da389
Download URL:

https://stacks.cdc.gov/view/cdc/9036/cdc_9036_DS1.pdf
File Type:

[PDF-2.17 MB]