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Request for Public Review and Comment of Changes to the Navstar GPS Space Segment/User Segment L5 Interface Specification (IS)

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Department of the Air Force, DoD.


Notice and request for review/comment of changes to IS-GPS-705.


This notice informs the public that the Global Positioning System (GPS) Joint Program Office (JPO) proposes to revise IS-GPS-705, Navstar GPS Space Segment/User Segment L5 Interfaces. This proposal is designated as PIRN-705-001. One of the main subjects of this revision effort is an introduction of new Improved Clock & Ephemeris (ICE) navigation message that will be broadcast with L5 signal. The proposal can be viewed and downloaded at the following Web site: Click on “System Engineering”, then “Public Interface Control Working Group (ICWG)”. Reviewers should save the document to a local memory location prior to opening and performing the review.


Submit comments to SMC/GPERC, 2420 Vela Way, Suite 1467, El Segundo CA 90245-4659. A comment matrix is provided for your convenience at the web site and is the preferred method of comment submittal. Comments may be submitted to the following Internet address: Comments may also be sent by fax to 1-310-363-6387.


The suspense date for comment submittal is 15 September 2004.

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GPERC at 1-310-363-2883, GPS JPO System Engineering Division, or write to the address above.

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The civilian and military communities use the Global Positioning System, which employs a constellation of 24 satellites to provide continuously transmitted signals to enable appropriately configured GPS user equipment to produce accurate position, navigation, and time information.

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Pamela D. Fitzgerald,

Air Force Federal Register Liaison Officer.

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[FR Doc. 04-21365 Filed 9-22-04; 8:45 am]