Fast frequency hopping radio station clock
To disable the "excellent" tracking jammer, the frequency hopping rate is required to be 
Where: tm≈information duration / jump ≈1 / jump rate For example: let R1 to R2 = 1km, R1 to J = 5km, J to R2 = 5km, then propagation delay = 3.3μs / km
t1 = t2 = 16.5 μs
tR = 3.3 μs, and tm <30 μs
Allowable clock error ≈0.2 tm≈6μs
For a synchronization time of 4 hours, the clock readiness requirement is 4 × 10-10.
Clock and C3 frequency hopping system
Slower to better clocks Faster to better clocks Extended clocks with better radio dead time Extended clocks with better calibration intervals Time with better orthogonality Clocks with better interoperability
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