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- Selective_availability_anti-spoofing_module abstract "A Selective Availability Anti-spoofing Module (SAASM) is used by military Global Positioning System receivers to allow decryption of precision GPS observations, while the accuracy of civilian GPS receivers may be reduced by the United States military through Selective Availability (SA) and anti-spoofing (AS). However, on May 1, 2000 it was announced that SA was being discontinued, along with a United States Presidential Directive that no future GPS programs will include it. Before the advent of L2C, AS was meant to prevent access to dual-frequency observations to civilian users.SAASM allows satellite authentication, over-the-air rekeying, and contingency recovery. Those features are not available with the similar, but older, PPS-SM system. PPS-SM systems require periodic updates with a classified "Red Key" that may only be transmitted by secure means (such as physically taking the receiver to a secure facility for rekeying or having a trusted courier deliver a paper tape with a new key to the receiver, after which that paper tape must be securely destroyed). SAASM systems can be updated with an encrypted "Black Key" that may be transmitted over unclassified channels. All military receivers newly-deployed after the end of September 2006 must use SAASM.SAASM does not provide any additional anti-jam capability, however the higher data (chipping) rate of P(Y) code can provide a higher processing gain which will provide better tracking performance in a jamming environment. Future GPS upgrades, such as M-Code, will provide additional improvements to anti-jam capabilities.SAASM hardware is covered with an anti-tampering coating, to deter analysis of their internal operation.Deployment of the next generation military signal for GPS, called M-code, commenced with the launch of IIR-M and IIF satellites, beginning in 2005. A complete constellation of 18 satellites with M-code capability is planned for 2016.".
- Selective_availability_anti-spoofing_module wikiPageExternalLink saving-saasm-1202.
- Selective_availability_anti-spoofing_module wikiPageID "3752644".
- Selective_availability_anti-spoofing_module wikiPageLength "2876".
- Selective_availability_anti-spoofing_module wikiPageOutDegree "14".
- Selective_availability_anti-spoofing_module wikiPageRevisionID "667574701".
- Selective_availability_anti-spoofing_module wikiPageWikiLink Category:Global_Positioning_System.
- Selective_availability_anti-spoofing_module wikiPageWikiLink Defense_Advanced_GPS_Receiver.
- Selective_availability_anti-spoofing_module wikiPageWikiLink Error_analysis_for_the_Global_Positioning_System.
- Selective_availability_anti-spoofing_module wikiPageWikiLink GPS_Block_IIIA.
- Selective_availability_anti-spoofing_module wikiPageWikiLink GPS_anti-spoofing.
- Selective_availability_anti-spoofing_module wikiPageWikiLink GPS_modernization.
- Selective_availability_anti-spoofing_module wikiPageWikiLink GPS_signals.
- Selective_availability_anti-spoofing_module wikiPageWikiLink Global_Positioning_System.
- Selective_availability_anti-spoofing_module wikiPageWikiLink Precision_Lightweight_GPS_Receiver.
- Selective_availability_anti-spoofing_module wikiPageWikiLink black_concept.
- Selective_availability_anti-spoofing_module wikiPageWikiLink Selective_Availability.
- Selective_availability_anti-spoofing_module wikiPageWikiLink United_States_Armed_Forces.
- Selective_availability_anti-spoofing_module wikiPageWikiLink United_States_military.
- Selective_availability_anti-spoofing_module wikiPageWikiLinkText "SAASM".
- Selective_availability_anti-spoofing_module wikiPageWikiLinkText "Selective availability anti-spoofing module".
- Selective_availability_anti-spoofing_module wikiPageWikiLinkText "anti-spoofing module".
- Selective_availability_anti-spoofing_module hasPhotoCollection Selective_availability_anti-spoofing_module.
- Selective_availability_anti-spoofing_module wikiPageUsesTemplate Template:Citation_needed.
- Selective_availability_anti-spoofing_module wikiPageUsesTemplate Template:Reflist.
- Selective_availability_anti-spoofing_module subject Category:Global_Positioning_System.
- Selective_availability_anti-spoofing_module type Article.
- Selective_availability_anti-spoofing_module type Instrument.
- Selective_availability_anti-spoofing_module type Article.
- Selective_availability_anti-spoofing_module type Instrument.
- Selective_availability_anti-spoofing_module comment "A Selective Availability Anti-spoofing Module (SAASM) is used by military Global Positioning System receivers to allow decryption of precision GPS observations, while the accuracy of civilian GPS receivers may be reduced by the United States military through Selective Availability (SA) and anti-spoofing (AS). However, on May 1, 2000 it was announced that SA was being discontinued, along with a United States Presidential Directive that no future GPS programs will include it.".
- Selective_availability_anti-spoofing_module label "Selective availability anti-spoofing module".
- Selective_availability_anti-spoofing_module sameAs SAASM.
- Selective_availability_anti-spoofing_module sameAs m.09z3nf.
- Selective_availability_anti-spoofing_module sameAs Q7447754.
- Selective_availability_anti-spoofing_module sameAs Q7447754.
- Selective_availability_anti-spoofing_module wasDerivedFrom Selective_availability_anti-spoofing_module?oldid=667574701.
- Selective_availability_anti-spoofing_module isPrimaryTopicOf Selective_availability_anti-spoofing_module.