Connotations, Characteristics and New Identification Method of Leverage Measurements. Issue 1 (November 2020)

• Record Type: Journal Article
• Authors: Liu, Youzhi; Zi, Hui; Xiao, Jian; Yang, Chunqi; Hou, Yanqiu; Lin, Jikeng
• Is Part Of: IOP conference series. Volume 603:Issue 1(2020)
• Publication Date: 2020-11
• Subjects: Leverage measurements -- Algebraic and geometric characteristics -- Generalized measurement potential index -- State estimation; Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/603/1/012041
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: Accurately identifying the bad data belonging to the leverage measurements can greatly improve the precision of state estimation. In this paper, we presented the algebraic and geometric characteristics of leverage measurements and proposed a new method to accurately identify the leverage measurements. First, we proved that a measurement infinitely close to the Jacobi matrix column space will be a leverage measurement. Second, we proposed a new method for leverage measurements identification using the modified generalized potential index (GPI). Finally, two cases verified the validity of the proposed method. Compared with other methods, the new method can identify multiple leverage measurements accurately.