Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Frank Neitzel"'
Publikováno v:
Geo-spatial Information Science, Vol 26, Iss 1, Pp 1-15 (2023)
ABSTRACTThe Real-Time Global Navigation Satellite System (GNSS) Precise Positioning Service (RTPPS) is recognized as the most promising system by providing precise satellite orbit and clock corrections for users to achieve centimeter-level positionin
Externí odkaz:
https://doaj.org/article/f6c8112b0a354661ba390ba79aece941
Publikováno v:
Remote Sensing, Vol 14, Iss 6, p 1460 (2022)
In the absence of detailed surface information, empirical solar radiation pressure (SRP) models, such as the five-parameter Empirical CODE Orbit Model (ECOM1) and its extended version-ECOM2, are widely used for modeling SRP forces acting on GNSS sate
Externí odkaz:
https://doaj.org/article/c245fc59d4844046a979db251941e7e7
Publikováno v:
Mathematics, Vol 9, Iss 18, p 2198 (2021)
In a series of three articles, spline approximation is presented from a geodetic point of view. In part 1, an introduction to spline approximation of 2D curves was given and the basic methodology of spline approximation was demonstrated using splines
Externí odkaz:
https://doaj.org/article/653208ec77934f8a9ed354cba6566089
Publikováno v:
Mathematics, Vol 8, Iss 9, p 1450 (2020)
In this contribution the fitting of a straight line to 3D point data is considered, with Cartesian coordinates xi, yi, zi as observations subject to random errors. A direct solution for the case of equally weighted and uncorrelated coordinate compone
Externí odkaz:
https://doaj.org/article/fbd409d8e71d4364aa5031b8e5810379
Publikováno v:
Mathematics, Vol 8, Iss 6, p 991 (2020)
Outlier detection is one of the most important tasks in the analysis of measured quantities to ensure reliable results. In recent years, a variety of multi-sensor platforms has become available, which allow autonomous and continuous acquisition of la
Externí odkaz:
https://doaj.org/article/2a379bc4bfef44a1841fa12572f2a6f4
Publikováno v:
Mathematics, Vol 8, Iss 4, p 522 (2020)
Global navigation satellite systems (GNSS) are an important tool for positioning, navigation, and timing (PNT) services. The fast and high-precision GNSS data processing relies on reliable integer ambiguity fixing, whose performance depends on phase
Externí odkaz:
https://doaj.org/article/b3c8a518940d46a2b8b2a44aeea298a9
Publikováno v:
Mathematics, Vol 7, Iss 5, p 462 (2019)
Spline approximation, using both values y i and x i as observations, is of vital importance for engineering geodesy, e.g., for approximation of profiles measured with terrestrial laser scanners, because it enables the consideration of arbitrary dispe
Externí odkaz:
https://doaj.org/article/20533a0fcb3740688777273de979fcf2
Autor:
Daniel Wujanz, Mathias Burger, Felix Tschirschwitz, Tassilo Nietzschmann, Frank Neitzel, Thomas P. Kersten
Publikováno v:
Sensors, Vol 18, Iss 7, p 2187 (2018)
Recent advances in stochastic modelling of reflectorless rangefinders revealed an inherent relationship among raw intensity values and the corresponding precision of observed distances. In order to derive the stochastic properties of a terrestrial la
Externí odkaz:
https://doaj.org/article/e9dee86007584f099604a8797e92adbf
Publikováno v:
Remote Sensing, Vol 10, Iss 2, p 337 (2018)
Precise Point Positioning (PPP) is a popular technology for precise applications based on the Global Navigation Satellite System (GNSS). Multi-GNSS combined PPP has become a hot topic in recent years with the development of multiple GNSSs. Meanwhile,
Externí odkaz:
https://doaj.org/article/d90d2763a71542bab7f54906a8e76c01
Publikováno v:
Journal of Applied Geodesy. 16:181-201
In this contribution it is shown how an extended uncertainty budget of the observations according to the Guide to the Expression of Uncertainty in Measurement (GUM) can be considered in adjustment computations. The extended uncertainty budget results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a622468631e9513b2959ebb5ff4a571
https://doi.org/10.1515/jag-2021-0043
https://doi.org/10.1515/jag-2021-0043