[Federal Register: March 3, 2004 (Volume 69, Number 42)] [Notices] [Page 10003-10004] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr03mr04-46] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF DEFENSE Department of the Air Force Request for Public Review and Comment of Changes to the Navstar GPS Space Segment/Navigation User Segment Interface Control Document (ICD) AGENCY: Department of the Air Force, DoD. ACTION: Notice and request for review/comment of changes to ICD-GPS- 200C. ----------------------------------------------------------------------- SUMMARY: 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: http://gps.losangeles.af.mil. 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. ADDRESSES: 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: smc.gperc@losangeles.af.mil. Comments may also be sent by fax to 1-310- 363-6387. DATES: The suspense date for comment submittal is March 29, 2004. FOR FURTHER INFORMATION CONTACT: GPERC at 1-310-363-2883, GPS JPO System Engineering Division, or write to the address above. SUPPLEMENTARY 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 [[Page 10004]] produce accurate position, navigation, and time information. Pamela D. Fitzgerald, Air Force Federal Register Liaison Officer. [FR Doc. 04-4667 Filed 3-2-04; 8:45 am] BILLING CODE 5001-05-P