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Natsios Young Architects

1 May 2006


[Federal Register: May 1, 2006 (Volume 71, Number 83)]
[Page 25571-25572]
From the Federal Register Online via GPO Access []



Department of the Air Force

Request for Public Review And Comment of the New Navstar GPS 
Space Segment/Navigation User Segment L1c (L1 Civil) Interface 
Specification (IS)

AGENCY: Department of the Air Force.

ACTION: Notice and Request for Review/Comment of new IS-GPS-800.


SUMMARY: This notice informs the public that the Global Positioning 
System (GPS) Joint Program Office (JPO) proposes to define and 
implement new L1C signal as specified in IS-GPS-800, Navstar GPS Space 
Segment/Navigation User L1C Interfaces. This new Interface 
Specification (IS), IS-GPS-800, provides detailed and necessary 
information for the new proposed L1C signal which is planned to be 
broadcast from the next generation of GPS satellites identified as

[[Page 25572]]

Block III. The draft IS-GPS-800 was first available to the public for 
review and comments on 20 April 2006. The review and comment period 
will be limited to 45 days from the day it is first made available to 
the public. The draft document will be available for view and for 
download 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. It is requested 
that any review comments be submitted using the comment matrix form 
provided at the web site.

ADDRESSES: Submit comments to SMC/GPEE, Attn: Lt Sean Lenahan, 483 N 
Aviation Blvd, El Segundo, CA 90245-2808, Attn: Lt Sean Lenahan. 
Comments may also be submitted to either the following Internet 
addresses: or, or, 

by fax to 1-310-653-3676.

DATES: The draft IS-GPS-800 will be made available to the public at or 
about 20 April 2006 and suspense date for comment submittal is 45 days 
after the release of the document (at or about 24 May 2006).

Engineering Division, or write to one of the addresses above.

SUPPLEMENTARY INFORMATION: The international position, navigation, and 
timing communities use the Global Positioning System, which employs a 
constellation of satellites at Medium Earth Orbit to provide 
continuously, transmitted signals to enable appropriately configured 
GPS user equipment to produce accurate position, navigation, and time 

Bao-Anh Trinh,
Air Force Federal Register Liaison Officer.
 [FR Doc. E6-6498 Filed 4-28-06; 8:45 am]