Nowadays many continuously Operating Reference Stations (CORS) network were established in Middle East to improve the surveying tasks. Establishing such geodetic control networks can be a costly business where multiple stations should be occupied simultaneously and post-processed with scientific software.
Kuwait Municipality established a system of GPS Continuously Operating Reference Stations (CORS) to provide the GPS users in Kuwait with VRS services to facilitate and improve the survey applications. The system is composed of Thirteen GPS stations distributed to cover the whole area of Kuwait. The accurate coordinates of these GPS tracking stations are normally determined by utilizing the differential GNSS techniques in the network adjustments integrating with part of the IGS stations whose coordinates are regularly maintained with the realization of the ITRF.
Recently, precise point positioning (PPP) provides precise positioning values that may be an alternative to precise relative processing. The current research aims to investigate that PPP has a potential as a reliable absolute positioning technique operational simplicity as well as to investigate the capability of PPP approach to be a low cost alternative to the conventional positioning methods used in position determination of core networks stations. In comparison with common relative GPS techniques, the costs are reduced; because no base stations and no simultaneous observations are necessary, no need for control network maintenance which could be the most defective factors that Egypt HARN network suffered from.
Fourteen days of GNSS data were processed by Bernese software to calculate the precise coordinates of Kuwait network and Three days of GNSS data were processed by Trimble business center software and using PPP approach to calculate the precise coordinates of Kuwait network. In this research a comparable investigation was carried out between the coordinates obtained from Bernese software, Trimble business center and PPP approach. The comparison proved high level of agreement between the coordinates which confirm that PPP approach can be applied for establishment of CORS network.
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