The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2000
Filed:
Jul. 09, 1998
Douglas Lent Cohen, Fort Wayne, IN (US);
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Abstract
A method of estimating expected errors of environmental data parameters based on radiance measurements obtained from visible infra red radiometric satellite sensors (VIIRS) orbiting the earth, comprising the steps of: obtaining N radiance measurements of a surface body I.sub.I, . . . ,I.sub.N defining matrix I depending on p unknown surface and atmospheric parameters T.sub.i, . . . T.sub.p, defining a matrix T; generating a forward model I=f(T) for obtaining the I radiance measurements from the p parameters; choosing an initial set of values for the p parameters and linearizing f(T) about the initial values to obtain a linearized forward I=s+H.theta. as f.sub.i (T.sub.01, T.sub.02, . . . T.sub.0p)+.SIGMA.H.sub.ij .theta..sub.j where I=1,2, . . . N and .theta..sub.j =T.sub.oj and H.sub.ij =.delta.f.sub.i /.delta.T.sub.j and where .theta. is a column matrix .theta..sub.l, . . . .theta..sub.p and H is a matrix of H.sub.ij values; adding measurement noise vector w of noise values to the forward model; determining the covariance of the measurement noise w to obtain a covariance matrix C; and manipulating the matrices H and C according to the equation C.sub.EDR =(H.sup.T C.sup.-1 H).sup.-1 to obtain matrix element C.sub.EDR indicative of the expected errors in the values of T.sub.1, . . . T.sub.p parameters.