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Part 1:
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HFGW will
propagate through the Earth with little impact.
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3 ground stations would be needed, 4 with
redundancy
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Each station would transmit:
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- a carrier wave (CW) signal for a
frequency reference
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- a periodic pulse signal (PPS) for
a time reference
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Each station would use a different
frequency such that the
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remote terminal user set could easily
differentiate signals
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Part 2
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Each Remote
Terminal (RT) would include
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antennae sensitive to each ground station.
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The RT triangulates off the 3 most distant
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ground station signals to calculate
position.
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Received frequency is compared to ideal
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frequency to calculate 3 axis Doppler
velocity.
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The HGFW antennae could be made very small
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- small enough to fit into a cellular
handheld.
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Each RT could use the CW signal for
frequency
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reference, and the PPS signal for a time
source.
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