Government turns up volume on GPS

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furtim @ Jan 25th 2006 7:26PM

It does sound like they're launching a whole new constellation of these. The linked article about the IIR launches says they're planning to roll out another seven of them, at least.

As for the specific nature of L2C, it seems to be an improved standard for the L2 frequency that's normally used for calculating ionospheric effects. So even if you only see one sat carrying the new L2C signal, you can still use it to correct for ionospheric distortions and improve overall accuracy. Up until the roll-out of L2C, this frequency has only been available to the military.

The main GPS signal is on the L1 frequency, so the new satellites don't really change how current single-frequency receivers work. Just they make dual-frequency receivers more useful for the public.

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