Content-class: urn:content-classes:message Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: [IGSMAIL-5643]: Termination of Selective Availability (SA) on GPS III Satellites Date: Thu, 20 Sep 2007 09:57:15 -0400 Message-ID: <858117A7B30DA24996FFD10899BB4F6068627F@XCGWSH05.gold.rtgold.nima.mil> Thread-Topic: Termination of Selective Availability (SA) on GPS III Satellites Thread-Index: Acf7jiYrelRJq1jcR6CW7ShovTWm6A== From: "Slater, James A." To: Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 20 Sep 06:57:21 PDT 2007 Message Number 5643 ****************************************************************************** Author: Jim Slater, NGA For your information: Here is a copy of the official press release announcing that the U.S. will terminate Selective Availability (SA) in the GPS III satellites. Statement by the Press Secretary 18 September 2007 15:32 WASHINGTON - (BUSINESS WIRE) - Today, the President accepted the recommendation of the Department of Defense to end procurement of Global Positioning System (GPS) satellites that have the capability to intentionally degrade the accuracy of civil signals. This decision reflects the United States strong commitment to users of GPS that this free global utility can be counted on to support peaceful civil activities around the world. This degradation capability, known as Selective Availability (SA), will no longer be present in GPS III satellites. Although the United States stopped the intentional degradation of GPS satellite signals in May 2000, this new action will result in the removal of SA capabilities, thereby eliminating a source of uncertainty in GPS performance that has been of concern to civil GPS users worldwide. GPS benefits users around the world in many different ways, including aviation, road, marine and rail navigation, telecommunications, emergency response, resource exploration, mining and construction, financial transactions, and many more. All users, and their governments, have a stake in the future of GPS. The United States promotes international cooperation in the operation of civil global navigation satellite systems and continues to work to build international support for the protection of these signals from intentional interference and disruption.