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| FAA |
Federal Aviation Administration |
| Fast switching channel |
A switching channel with a sequence time short enough to
recover (through software prediction) the integer part of the
carrier beat phase. This gives a receiver the ability to track
more than one satellite with a single channel. |
| Fast multiplexing channel |
See Fast
switching channel |
| Federal Radionavigation Plan (FRP) |
Congressionally mandaged, joint Department of Defense (DoD)
and Department of Transportation (DOT) effort to reduce the
proliferation and overlap of federally funded radionavigation
systems. The FRP is designed to delineate policies and plans
for U.S. government-provided radionavigation services. |
| Flattening |
f = (a-b) / a = 1 - (1 - e2)_ a = semi-major axis b = semi-minor
axis e = eccentricity |
| FM |
Frequency Modulation |
| Frequency band |
A range of frequencies in a particular region of the electromagnetic
spectrum. |
| Frequency spectrum |
The distribution of signal amplitudes as a function of frequency |
| FRP |
See Federal Radionavigation Plan |
| Fundamental frequency |
The fundamental frequency used in GPS is 10.23 Mhz. The carrier
frequencies L1 and L2 are integer multiples of this fundamental
frequency. L1 = 154F = 1575.42MHz L2 = 120F = 1227.60 Mhz |
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