Research on refining algorithm of information with equality constraints

An algorithm to refine the information with equality constraints, based on the theories of parameter adjustment with conditions and generalized adjustment, is proposed in this paper. With our algorithm, for given vector estimation, covariance matrix and the corresponding equality constraints, more accurate estimation and covariance matrix of the vectors can be obtained after simple matrix operation. As shown in the numerical calculation, our algorithm is simple and easy to perform and the results are reliable.