attila at kinali.ch
Thu Jul 24 18:31:16 EDT 2014
On Thu, 24 Jul 2014 10:30:07 -0700
Michael Perrett <mkperrett at gmail.com> wrote:
> The government is in the process of fielding three new signals designed for
> civilian use: L2C, L5, and L1C. The legacy civil signal, called L1 C/A or
> C/A at L1, will continue broadcasting in the future, for a total of four
> civil GPS signals. Users must upgrade their equipment to benefit from the
> new signals.
Side note: L1C and L5 will only be available with Block III satellites.
(ie. not before 201x, and even then only one or two satellites)
L2C is available with Block IIM and IIF (13 satellites)
> These new signals (will) provide many advantages as seen by the civilian
> user, one of the most obvious is the ability to make real time IONO
> corrections on civilian receivers (currently restricted to P Code
L1/L2 receivers already exist for civilan use and have been for
some time. The P(Y) code does not need to be decoded for tracking
the signal. This is known as "codless tracking".
I pity people who can't find laughter or at least some bit of amusement in
the little doings of the day. I believe I could find something ridiculous
even in the saddest moment, if necessary. It has nothing to do with being
superficial. It's a matter of joy in life.
-- Sophie Scholl
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