文献类型：专利

英文题名：Lower triangular Cholesky decomposition based satellite navigation and positioning ambiguity resolution method, involves outputting covariance matrix, and performing ambiguity search process by covariance matrix to obtain positioning result

作者：LU L;LI D;LU T;WANG S;WANG J

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN107957586-A

申请日：2017-11-21

公开日：2018-04-24

语种：英文

收录：DERWENT

摘要：NOVELTY - The method involves determining ambiguity variance-covariance matrix for LDLT according to data received by a ground receiver. LDLT decomposition process is performed in the ambiguity variance-covariance matrix. Gaussian elimination process is performed for updating an element value. Variance of an adjacent condition is exchanged and updated the corresponding element value. An entire matrix-related process is completed. A covariance matrix is output by a correlation process. An ambiguity search process is performed by using the covariance matrix to obtain a final positioning result. USE - Lower triangular Cholesky decomposition based satellite navigation and positioning ambiguity resolution method. ADVANTAGE - The method enables realizing ambiguity search ellipsoid shape to reduce redundancy integer candidate node number, reducing ambiguity searching time and improving ambiguity resolution efficiency. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a lower triangular cholesky decomposition based satellite navigation and positioning ambiguity resolution method. '(Drawing includes non-English language text)'