title: [New approach to resolution enhancement of Fourier transform spectrum].
abstract: Treating resolution enhancement of Fourier transform spectrum as the estimations of harmonic frequencies and amplitudes in the interferogram, the method based on eigenvalue analysis and linear fitting (EALF) was brought forward. EALF was divided into three steps: parameter estimation with total least squares, frequency estimation with eigenvalue analysis, and amplitude estimation with least squares fitting. The principle of the method was introduced. Computer experiment was presented to validate the principle. Characteristics of the method were discussed. The main advantages of EALF over alternative approaches to resolution enhancement of Fourier transform spectrum were summarized.
authors.affiliation: Department of Precision Instruments and Mechanics, Tsinghua University, Beijing 100084, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Dong
authors.forename: Li-bin
authors.initials: LB
authors.lastname: Xiang
authors.forename: Bao-chang
authors.initials: BC
authors.lastname: Zhao
mesh_terms: D005583:Fourier Analysis; D016018:Least-Squares Analysis; D008432:Mathematical Computing; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted; D013053:Spectrophotometry / Q000379:methods*