Improvement of GPS Precise Point Positioning Accuracy in Urban Canyons - Further Results
نویسندگان
چکیده
منابع مشابه
Using two GPS satellites to improve WiFi positioning accuracy in urban canyons
It is well known that a GPS receiver needs to “see” at least four satellites to provide a 3D fix solution. But in difficult environments such as an urban canyon, the number of “visible” satellites is often not enough. WiFi signals have been utilized for positioning mainly based on the fingerprinting technology. However, the accuracy of WiFi positioning outdoors is from several tens of meters to...
متن کاملCombined GPS/GLONASS Precise Point Positioning with Fixed GPS Ambiguities
Precise point positioning (PPP) technology is mostly implemented with an ambiguity-float solution. Its performance may be further improved by performing ambiguity-fixed resolution. Currently, the PPP integer ambiguity resolutions (IARs) are mainly based on GPS-only measurements. The integration of GPS and GLONASS can speed up the convergence and increase the accuracy of float ambiguity estimate...
متن کاملGPS Phase-Connected, Precise Point Positioning of Low Earth Orbiters
A completely geometric approach for precise orbit determination (POD) of low earth orbiter (LEO) spacecraft has been devised by the authors which does not use dynamic models, but only data from the GPS receiver onboard the LEO and the International GPS Service (IGS) precise GPS ephemeris product. The strategy relies on combining the time-continuous measurement strength of the pseudorange and ca...
متن کاملModeling and Assessment of GPS/BDS Combined Precise Point Positioning
Precise Point Positioning (PPP) technique enables stand-alone receivers to obtain cm-level positioning accuracy. Observations from multi-GNSS systems can augment users with improved positioning accuracy, reliability and availability. In this paper, we present and evaluate the GPS/BDS combined PPP models, including the traditional model and a simplified model, where the inter-system bias (ISB) i...
متن کاملPerformance Analysis of Several GPS/Galileo Precise Point Positioning Models
This paper examines the performance of several precise point positioning (PPP) models, which combine dual-frequency GPS/Galileo observations in the un-differenced and between-satellite single-difference (BSSD) modes. These include the traditional un-differenced model, the decoupled clock model, the semi-decoupled clock model, and the between-satellite single-difference model. We take advantage ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications
سال: 2015
ISSN: 2188-4730,2188-4749
DOI: 10.5687/sss.2015.180