An Inverse Fourier Transform for In-Place Continuous-Wave Data Reduction.
Final rept. 10 May-30 Oct 73,
STANFORD RESEARCH INST MENLO PARK CALIF
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The selection and testing of an inverse Fourier transform IFT algorithm for use with Minuteman In-Place continuous-wave CW data are described. The CW data are obtained in the presence of noise at unequally spaced frequency intervals the time response to be obtained is a transient. A trapezoidal approximation to the Fourier integral transform is selected. Time-domain effects of the IFT algorithm, an amplitude-windowing algorithm, a phase-unwrapping algorithm, typical CW sampling functions, and nominal measurement errors are investigated in a computerized simulation study using analytically defined input functions. IFT results are also presented for some typical CW data, and their validity, reliability, and accuracy are discussed.
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