CCF20100310008

_n_n n n n n n

T(l)

--H T(2) ,	T(N)
" * 1 l(j)

Figurę 3a. In the traditional method of fringe processing, the analog fringe signal is con-verted to a series of pulses whose times of occurrence are measured.

Figurę 3b. In the new instrument, the signal is sampled with a very fast analog-to-digital converter. Because the form of the fringe signal is approximately known, the original signal can be reconstructed from an aliased time series.

13