United States Department of Transportation
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Vulnerability assessment of the transportation infrastructure relying on global positioning system
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2001-08-29
[PDF-466.71 KB]
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Abstract:This report responds to Presidential Decision Directive 63 concerning assessing the risks to the transportation infrastructure resulting from the degradation or loss of the Global Positioning System (GPS) signal. This study includes analysis of civilian aviation, maritime, and surface uses of GPS, assessing the ways in which users might be impacted by a short or long term GPS outage, and recommending steps that the U.S. Government and user community might take to minimize the safety and operational impacts of such outages. This study is intended to consider operations extending at least to 2010, so that some speculation about the intended use of GPS, its augmentations, and alternative navigation systems and methods was necessary. Three sets of findings and recommendations are made relative to: Overarching issues related to GPS vulnerabilities; Mitigating the vulnerabilities of the GPS signal to disruption or loss; and Mitigating the vulnerabilities of the transportation system resulting from disruption or loss of the GPS signal.
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