Simplified formulae for the BIQUE estimation of variance components in disjunctive observation groups |
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| Authors: | N. Crocetto M. Gatti P. Russo |
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| Affiliation: | (1) Faculty of Engineering, Second University of Naples, Via Roma 29, I-81031 Aversa (Ce), Italy e-mail: nicola.crocetto@unina2.it, IT;(2) Institute of Engineering, University of Ferrara, Via Saragat 1, I-44100 Ferrara, Italy e-mail: prusso@ing.unife.it, IT |
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| Abstract: | General rigorous and simplified formulae are reported for the best invariant quadratic unbiased estimates of the variance–covariance components, which can be applied to all least-squares adjustments with the general linear stochastic model. Simplified procedures are given for two cases frequently recurring in geodetic applications: uncorrelated groups of correlated or uncorrelated observations, with more than one variance component in each group. Received: 19 November 1998 / Accepted: 21 March 2000 |
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| Keywords: | : Stochastic model – Variance– covariance components – BIQUE |
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