Skip to Content


Request for Public Review and Comment of Changes to the Navstar GPS Space Segment/Navigation User Segment Interface Control Document (ICD)

Document Details

Information about this document as published in the Federal Register.

Document Statistics
Document page views are updated periodically throughout the day and are cumulative counts for this document including its time on Public Inspection. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day.
Published Document

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

Start Preamble


Department of the Air Force, DoD.


Notice and request for review/comment of changes to ICD-GPS-200C.


This notice informs the public that the Global Positioning System (GPS) Joint Program Office (JPO) proposes to revise ICD-GPS-200, Navstar GPS Space Segment / Navigation User Interfaces. This proposal changes the document identifier from ICD-GPS-200 to Interface Specification (IS)-GPS-200. In addition, this revision will increment the revision letter from C to D, resulting in IS-GPS-200 Revision D. 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 L2 C signal. These proposed changes are described in a Draft IS-GPS-200D. The draft document 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 March 29, 2004.

Start Further Info


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

End Further Info End Preamble Start Supplemental Information


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 Start Printed Page 10004produce accurate position, navigation, and time information.

Start Signature

Pamela D. Fitzgerald,

Air Force Federal Register Liaison Officer.

End Signature End Supplemental Information

[FR Doc. 04-4667 Filed 3-2-04; 8:45 am]