Coherence Losses

C = 1 - (Nrms)2/2

• Unmodelled quadratic terms (“fringe accelerations”) cause coherence loss

Tc = 375 sec(Acc/10 mHz/hr)-1/2

• Acc ~ 10 mHz/hr with TCF; Tc ~ 375 sec

• Acc ~ 300-1000 without TCF; Tc < 100 sec

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