The Global Rescue Alarm Net (GRAN): a system analysis.

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Author
Langley, Michael Edwin
Date
1973-09Advisor
Ohlson, John E.
Second Reader
Jauregui, Stephen Jr.
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Show full item recordAbstract
The Global Rescue Alarm Net (GRAN) is a proposed Search and Rescue
(SAR) system. The purpose of the system is to provide real-time worldwide
distress alarm, identification, and position information for the
isolated distress case„ In the GRAN system a link consists of a handheld
Search and Rescue Communicator (SARCOM) unit, a geosynchronous Search and
Rescue Satellite (SARSAT) relay, and a processing station, the Search and
Rescue Central (SARCEN). This thesis is a system analysis of the proposed
GRAN system to generate the broad system requirements. To provide
global coverage the numbers and locations of SARSATs and SARCENs are determined.
Based on SAR statistical data, SARCOM distribution, multiple
access, and probability of interfering transmissions are examined. The
SARSAT characteristics such as configuration, antenna gains, and power
output are considered in relation to the overall system.- From experimental
and theoretical data, reference values are chosen which are representative
of near-worst case from which the total link can be characterized.
From this characterization, system parameters such as SARCEN
G/T and SARSAT transmit power can be determined.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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