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