caa a22 4500 475737652 CHVBK 20180406123451.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/s001900000096 doi (NATIONALLICENCE)springer-10.1007/s001900000096 Wang J. School of Spatial Sciences, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia Now at: School of Geomatic Engineering, The University of New South Wales, Sydney, NSW 2052, Australia e-mail: jl.wang@unsw.edu.au; Tel.: +61-2-9385 4203; Fax: +61-2-9313 7493, AU aut An approach to GLONASS ambiguity resolution [Elektronische Daten] [J. Wang] Abstract.:  When processing global navigation satellite system (GLONASS) carrier phases, the standard double-differencing (DD) procedure cannot cancel receiver clock terms in the DD phase measurement equations due to the multiple frequencies of the carrier phases. Consequently, a receiver clock parameter has to be set up in the measurement equations in addition to baseline components and DD ambiguities. The resulting normal matrix unfortunately becomes singular. Methods to deal with this problem have been proposed in the literature. However, these methods rely on the use of pseudo-ranges. As pseudo-ranges are contaminated by multi-path and hardware delays, biases in these pseudo-ranges are significant, which may result in unreliable ambiguity resolution. A new approach is addressed that is not sensitive to the biases in the pseudo-ranges. The proposed approach includes such steps as converting the carrier phases to their distances to cancel the receiver clock errors, and searching for the most likely single-differenced (SD) ambiguity. Based on the results from the theoretical investigation, a practical procedure for GLONASS ambiguity resolution is presented. The initial experimental results demonstrate that the proposed approach is useable in cases of GLONASS and combined global positioning system (GPS) and GLONASS positioning. Springer-Verlag Berlin Heidelberg, 2000 Key words: GLONASS nationallicence GPS nationallicence Ambiguity resolution nationallicence Satellite geodesy nationallicence https://doi.org/10.1007/s001900000096 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001900000096 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Wang J. School of Spatial Sciences, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia Now at: School of Geomatic Engineering, The University of New South Wales, Sydney, NSW 2052, Australia e-mail: jl.wang@unsw.edu.au; Tel.: +61-2-9385 4203; Fax: +61-2-9313 7493, AU aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer