An assessment of the precise products on static Precise Point Positioning using Multi-Constellation GNSS [PDF]
, 2018 Precise point positioning (PPP) is highly dependent on the precise ephemerides and satellite clock products that are used. Different ephemeris and clock products are available from a variety of different organizations.
Bingley, R.M. +3 more
core +1 more source
Accuracy of a magnetic resonance imaging‐based 3D printed stereotactic brain biopsy device in dogs [PDF]
, 2020 Background: Brain biopsy of intracranial lesions is often necessary to determine specific therapy. The cost of the currently used stereotactic rigid frame and optical tracking systems for brain biopsy in dogs is often prohibitive or accuracy is not ...
Böttcher, Peter +8 more
core +1 more source
Evaluation of Ionospheric Delay Effects on Multi-GNSS Positioning Performance
Remote Sensing, 2019 Ionospheric delay is a significant error source in multi-GNSS positioning. We present different processing strategies to fully exploit the ionospheric delay effects on multi-frequency and multi-GNSS positioning performance, including standard point ...
Ke Su, Shuanggen Jin, M. M. Hoque
doaj +1 more source
Positioning with stationary emitters in a two-dimensional space-time [PDF]
, 2006 The basic elements of the relativistic positioning systems in a two-dimensional space-time have been introduced in a previous work [Phys. Rev. D {\bf 73}, 084017 (2006)] where geodesic positioning systems, constituted by two geodesic emitters, have been ...
B. Coll +6 more
core +3 more sources
The positioning performance of low-cost GNSS receivers in the Precise Point Positioning method [PDF]
Advances in Geodesy and Geoinformation, 2022 Satellite-based positioning, which started being developed in the mid-1960s for military purposes, is now used in almost every area. For the studies single and/or double frequency receivers are used.
Mustafa Fahri Karabulut +9 more
doaj +1 more source
Precise Point Positioning with Kepler [PDF]
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall), 2019 Precise Point Positioning (PPP) enables an absolute positioning with centimeter-level accuracy without the need of raw measurements from a reference station. However, today's GPS L1/ L2-based PPP solutions typically need more than 30 minutes to converge.
openaire +2 more sources
Effectiveness of observation-domain sidereal filtering for GPS precise point positioning [PDF]
, 2015 Sidereal filtering is a technique used to reduce errors caused by multipath in the positioning of static receivers via the Global Positioning System (GPS).
Atkins, C, Ziebart, M
core +1 more source
Multi-Frequency Precise Point Positioning using GPS and Galileo data with smoothed ionospheric corrections [PDF]
, 2018 The poor signal visibility and continuity associated with urban environments together with the slow convergence/reconvergence time of Precise Point Positioning (PPP), usually makes PPP unsuitable for land navigation in cities.
Basile, Francesco +4 more
core +1 more source
Research Article. Improved Dual Frequency PPP Model Using GPS and BeiDou Observations
Journal of Geodetic Science, 2017 This paper introduces a new dual-frequency precise point positioning (PPP) model, which combines GPS and BeiDou observations. Combining GPS and BeiDou observations in a PPP model offers more visible satellites to the user, which is expected to enhance ...
Afifi A., El-Rabbany A.
doaj +1 more source
A cryogenic rotation stage with a large clear aperture for the half-wave plates in the Spider instrument [PDF]
, 2015 We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the Cosmic Microwave Background at 95 GHz and 150 GHz during a stratospheric balloon flight ...
Alexandra S. Rahlin +51 more
core +3 more sources