A method includes extracting phase due to fringe count error (FCE) in spectra formed by an interferometer. The exemplary method includes the steps of: (a) forming an earth scene spectrum; (b) forming a background reference spectrum; and (c) forming a phase extraction function, Rk, where k is a kth channel...http://www.google.com.tw/patents/US7764383?utm_source=gb-gplus-share專利 US7764383 - Adaptively determining the sign in a fringe count detection system
