Ambiguity resolution for triple-frequency geometry-free and ionosphere-free combination tested with real data
نویسندگان
چکیده
منابع مشابه
Triple-frequency Ionosphere-free Phase Combinations for Ambiguity Resolution
Linear combinations of the carrier phase data which are independent of the ionospheric delays are referred to as ionosphere-free linear phase combinations. In the dual frequency case there exists only one such combination which at the same time ensures the integer estimability of the ambiguities. In the triple-frequency case there is a whole class of such linear combinations. We identify this c...
متن کاملImproving the Triple-Carrier Ambiguity Resolution with a New Ionosphere-Free and Variance-Restricted Method
The ionospheric bias and the combined observation noise are two crucial factors affecting the reliability of the triple-carrier ambiguity resolution (TCAR). In order to obtain a better reliability of TCAR, a new ionosphere-free and variance-restricted TCAR method is proposed through exploring the ambiguity link between each step of TCAR. The method constructs an ionosphere-free combination and ...
متن کاملThe geometry-free GPS ambiguity search space with a weighted ionosphere
In this contribution the impact of a presumed presence or absence of the ionospheric delays on the quality of the least-squares ambiguities is analysed. The spatial correlation and the time correlation of the ionospheric delays are captured in an a priori ionospheric variance matrix. It is shown how the size and shape of the ambiguity search space is aected by the use of these a priori ionosph...
متن کاملAnalysis of BeiDou Satellite Measurements with Code Multipath and Geometry-Free Ionosphere-Free Combinations
Using GNSS observable from some stations in the Asia-Pacific area, the carrier-to-noise ratio (CNR) and multipath combinations of BeiDou Navigation Satellite System (BDS), as well as their variations with time and/or elevation were investigated and compared with those of GPS and Galileo. Provided the same elevation, the CNR of B1 observables is the lowest among the three BDS frequencies, while ...
متن کاملReview of triple-frequency GNSS: ambiguity resolution, benefits and challenges
Triple-frequency GNSS has been intensively studying in the past decades, especially with the open service of China’s BeiDou system. In this review, we will address the ambiguity resolution, benefits gained from additional frequency signals compared to the dual-frequency GNSS signals, as well as analyse the challenges of triple-frequency GNSS for future development. We first review and compare t...
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: Journal of Geodesy
سال: 2013
ISSN: 0949-7714,1432-1394
DOI: 10.1007/s00190-013-0630-7