| 摘要 |
A method and for acquiring interferogram data and a Fourier transform spectrometer, including a detector that provides an output signal that exhibits non-linear distortion in a measured interferogram represented by a power series Im = a1I + a2I<2> + a3I<3> + ...,comprising the steps of representing a measured spectrum as Sm = a1 S + a2(S*S) + a3 (S*S*S)+b3 (S*S*S*S) + ... where S is the spectrum of the linear interferogram and* indicates convolution, expressing a linear interferogram I as a power series of a measured interferogram Im as in I = b1Im + b2Im<2> + b3Im<3> + ..., expressing the linear spectrum as a power series of the spectra of the interferogram powers S = b1S1 + b2S2 +b3S3 ..., and obtaining the coefficients bi where S = 0. |
