01.12.2014 Views

DISTRIBUTION STATEMENT A APPROVED FOR ... - GPS.gov

DISTRIBUTION STATEMENT A APPROVED FOR ... - GPS.gov

DISTRIBUTION STATEMENT A APPROVED FOR ... - GPS.gov

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

3 REQUIREMENTS<br />

3.1 Interface Identification<br />

This ICD defines the interfaces between the Next Generation Global Positioning System<br />

(<strong>GPS</strong>) Operational Advanced Control Segment (OCX) and the <strong>GPS</strong> uUser and uUsersupport<br />

communities during the OCX era. The files provided by the <strong>GPS</strong> OCX CS to<br />

these <strong>GPS</strong> Users are the Almanacs, Operational Advisories (OAs), Anti-Spoofing (A-S)<br />

statusStatus, and the Notice Advisory to Navstar Users (NANUs) corresponding to all<br />

legacy signals and the new Civil signals L1C, L2C, and L5, and M-Code. The primary<br />

means for distribution of the data that is generated by the <strong>GPS</strong> OCX CS is via electronic<br />

mail (e-mail), Internet and SIPRNet. Figure 1 captures the interfaces defined in this<br />

ICD.<br />

MCS/AMCS<br />

Users<br />

Automatic NANU<br />

notification sent via e-mail<br />

Almanacs, NANUs,<br />

OAs, and A-S Status<br />

data files via OCX<br />

Internet Website<br />

Internet<br />

DHS USCG/DOT FAA/<br />

Other Civil Users<br />

OCX Secure Network<br />

Environment<br />

Almanacs , NANUs,<br />

OAs, and A-S Status<br />

Almanacs, NANUs,<br />

OAs, and A-S Status<br />

data files via OCX<br />

SIPRNet Website<br />

SIPRNet<br />

Military <strong>GPS</strong> User<br />

Community<br />

SAFB/VAFB<br />

MCS/AMCS<br />

Users<br />

Automatic NANU<br />

notification sent via e-mail<br />

Almanacs, NANUs,<br />

OAs, and A-S files via<br />

OCX Internet<br />

Website<br />

Internet<br />

DHS USCG/DOT FAA/<br />

Other Civil Users<br />

OCX Secure Network<br />

Environment<br />

Almanacs , NANUs,<br />

OAs, and A-S<br />

Almanacs, NANUs,<br />

OAs, and A-S files<br />

via OCX SIPRNet<br />

Website<br />

SIPRNet<br />

Military <strong>GPS</strong> User<br />

Community<br />

SAFB/VAFB<br />

5<br />

ICD-<strong>GPS</strong>-870<br />

23 June 2011

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!