means for calculating a phase correction to compensate for turnaround-induced errors in measurements of phase differences between the two beams using the equation ##EQU16## where D=backscattered light amplitude, αo =heterodyne phase acceleration at turnaround, Ψo =heterodyne phase at turnaround,...
From Equation (21) we can see that the vth harmonic MMF produced by the fault coil is proportional to the pitch shortening factor ky,v of the coil with regard to the vth harmonic for definite field current and short turns. Therefore, the RMS of the vth harmonic current induced in the ...