Return-Path: <sentto-279987-1712-999869354-fc=all.net@returns.onelist.com> Delivered-To: fc@all.net Received: from 204.181.12.215 by localhost with POP3 (fetchmail-5.1.0) for fc@localhost (single-drop); Fri, 07 Sep 2001 06:31:24 -0700 (PDT) Received: (qmail 22662 invoked by uid 510); 7 Sep 2001 13:29:25 -0000 Received: from n9.groups.yahoo.com (216.115.96.59) by 204.181.12.215 with SMTP; 7 Sep 2001 13:29:25 -0000 X-eGroups-Return: sentto-279987-1712-999869354-fc=all.net@returns.onelist.com Received: from [10.1.4.54] by fl.egroups.com with NNFMP; 07 Sep 2001 13:29:15 -0000 X-Sender: fc@big.all.net X-Apparently-To: iwar@onelist.com Received: (EGP: mail-7_3_2_1); 7 Sep 2001 13:29:13 -0000 Received: (qmail 65971 invoked from network); 7 Sep 2001 13:28:41 -0000 Received: from unknown (10.1.10.27) by l8.egroups.com with QMQP; 7 Sep 2001 13:28:41 -0000 Received: from unknown (HELO big.all.net) (65.0.156.78) by mta2 with SMTP; 7 Sep 2001 13:28:41 -0000 Received: (from fc@localhost) by big.all.net (8.9.3/8.7.3) id GAA06910 for iwar@onelist.com; Fri, 7 Sep 2001 06:28:28 -0700 Message-Id: <200109071328.GAA06910@big.all.net> To: iwar@onelist.com (Information Warfare Mailing List) Organization: I'm not allowed to say X-Mailer: don't even ask X-Mailer: ELM [version 2.5 PL1] From: Fred Cohen <fc@all.net> Mailing-List: list iwar@yahoogroups.com; contact iwar-owner@yahoogroups.com Delivered-To: mailing list iwar@yahoogroups.com Precedence: bulk List-Unsubscribe: <mailto:iwar-unsubscribe@yahoogroups.com> Date: Fri, 7 Sep 2001 06:28:28 -0700 (PDT) Reply-To: iwar@yahoogroups.com Subject: [iwar] [fc:GPS-vulnerabilities] Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Aviation Daily: Study Reports GPS Vulnerable To Several Types Of Jamming By Jim Baumgarner, Aviation Daily, 9/6/2001 <a href="http://www.aviationnow.com/avnow/news/channel_military.jsp?view=story&id=news/bgps0828.xml">http://www.aviationnow.com/avnow/news/channel_military.jsp?view=story&id=news/bgps0828.xml> An as-yet-unreleased study on the vulnerability of GPS (Global Positioning System) shows that satellite networks are vulnerable to disruptions from several causes, including intentional jamming and atmospheric effects. The study, by the Volpe National Transportation Center, makes several recommendations to lessen the impact of such events on the national transportation infrastructure. It appears to pour cold water on FAA's plan to use GPS as a sole-means system, recommending instead the development of affordable backup systems. DOT and the Defense Department had sponsored the Volpe study after questions were raised in the U.S. and abroad on the wisdom of relying solely on GPS signals when evidence existed that the signals were vulnerable to unintentional and intentional disruptions. FAA nevertheless forged ahead with a policy that GPS be a sole means system. That appears likely to change, according to a draft press release from the DOT and obtained by The DAILY due to be released next week. First, DOT wants to brief its modal agencies, the White House and congressional committees. The report is scheduled to be discussed at a Sept. 10 Salt Lake City conference, which will include representation by the Volpe Center's Jim Carroll and a DOT response by DOT's Bart Blue. Although subject to change, the draft press release quotes DOT Secretary Norman Mineta as saying that "this report provides a road-map to addressing possible vulnerabilities in GPS so that we can maintain the highest standards of transportation safety. This department is committed to developing and carrying out a plan based on these recommendations, so that GPS will fulfill its potential as a key element of the nation's transportation infrastructure." Sources said that both U.S. and international interests hope the actual report will spell out the vulnerability problems and what it intends to do about them. An earlier draft report was sent back to Volpe to review the vulnerability aspects, but sources said Volpe refused to water down the implications. According to the draft press release, GPS is susceptible to unintentional disruption from such causes as atmospheric effects, blockage by building and communications equipment, and by intentional disruption. The report contains a number of recommendations, including continuing the GPS program with higher broadcast power and with the eventual availability of three civil frequencies. Another is to make users aware of the need to mitigate degradation or loss of signal through unintended inferences by communications sources. It also recommends implementing systems to monitor, report and locate unintentional interference, to assess the applicability of military anti-jamming technology and to work with industry to make the technology available for civil uses. The report encourages the development of "affordable systems as backups to GPS." ------------------------ Yahoo! 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This archive was generated by hypermail 2.1.2 : 2001-09-29 21:08:40 PDT