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Talk:Selective availability anti-spoofing module

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"SAASM-enabled receivers can also acquire the encrypted Y-code directly from satellite, without relying on local radio signals. This provides a substantially-increased resistance to GPS jamming, perhaps 10 to 20 db better than the PPS-SM system."

Can someone explain this statement? P(Y) is a radio signal, anyone can listen to it, although they might not find it useful. And when would you ever need to use "local radio signals"?

Maury 17:58, 24 August 2006 (UTC)[reply]

By "Local radio signals" they mean a ground based military radio that enables the GPS's for a mission. Remember this isnt a tom tom...

"This provides a substantially-increased resistance to GPS jamming, perhaps 10 to 20 db better than the PPS-SM system."

Im not sure why it is stated that WHERE the code comes from means it will take more or less power to jam it. I can't say that statement is accurate. 10db = 10x more power and 20db = 100x more power.

It doesn't take much to jam ANY GPS. Spoofing it is much much harder. — Preceding unsigned comment added by 98.116.47.235 (talk) 07:12, 19 August 2012 (UTC)[reply]

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