Results 21 to 30 of about 4,073 (231)
Modeling wide-area tropospheric delay corrections for fast PPP ambiguity resolution [PDF]
, 2022 The performance of precise point positioning (PPP) has been significantly improved thanks to the continuous improvements in satellite orbit, clock, and ambiguity resolution (AR) technologies, but the convergence speed remains a limiting factor in real ...
Cui, Bobin +4 more
core +1 more source
Remote Sensing, 2020 Rapid precise point positioning ambiguity resolution (PPP-AR) is of great importance to improving precise positioning efficiency. There is an expectation that Galileo multi-frequency (three or more frequencies) data processing will offer a promising way ...
Shaoming Xin +3 more
doaj +1 more source
BDS-3/GPS/Galileo OSB Estimation and PPP-AR Positioning Analysis of Different Positioning Models
Remote Sensing, 2022 With the completion of the BeiDou Global Navigation Satellite System (BDS-3), the multi-system precise point positioning ambiguity resolution (PPP-AR) has been realized. The satellite phase fractional cycle bias (FCB) is a key to the PPP-AR.
Bo Li +8 more
doaj +1 more source
Remote Sensing, 2021 We investigate the estimation of the fractional cycle biases (FCBs) for GPS triple-frequency uncombined precise point positioning (PPP) with ambiguity resolution (AR) based on the IGS ultra-rapid predicted (IGU) orbits. The impact of the IGU orbit errors
Lizhong Qu +6 more
doaj +1 more source
Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 2022 Bu çalışma geleneksel-Hassas Nokta Konumlama (PPP: Precise Point Positioning) ve PPP-AR (Ambiguity Resolution) yöntemlerinin yapı sağlığı izlemeleri ve Global Navigation Satellite Systems (GNSS)-sismolojisi uygulamalarındaki etkinliğini ve ilgili ...
Mert Bezcioğlu +3 more
doaj +1 more source
Analysis of multi-constellation GNSS signal quality [PDF]
, 2016 The code pseudo-ranges and phase pseudo-ranges are affected by the systematic errors or biases and random noises. These errors can be classified into three groups, satellite related errors, propagation-medium related errors and receiver related errors ...
Hill, Chris +3 more
core +3 more sources
An assessment of the interoperability of PPP-AR network products [PDF]
The Journal of Global Positioning Systems, 2017 Integer ambiguity resolution of carrier-phase measurements from a single receiver can be implemented by applying additional satellite corrections (products) to mitigate unmodelled satellite equipment delays. Interoperability of different PPP-AR products would allow the PPP user to transform independently generated PPP-AR products to obtain multiple ...
Garrett Seepersad, Sunil Bisnath
openaire +1 more source
A Dense Reference Network for Mass-Market Centimeter-Accurate Positioning [PDF]
, 2016 The quality of atmospheric corrections provided by a dense reference network for centimeter-accurate carrierphase differential GNSS (CDGNSS) positioning is investigated.
Gonzalez, Collin W. +3 more
core +1 more source
Remote Sensing, 2020 The new generations of global navigation satellite system (GNSS) space vehicles can transmit three or more frequency signals. Multi-frequency observations bring a significant improvement to precise point positioning ambiguity resolution (PPP AR). However,
Gen Liu +4 more
doaj +1 more source
Remote Sensing, 2019 Compared with the traditional ionospheric-free linear combination precise point positioning (PPP) model, the un-differenced and uncombined (UDUC) PPP model using original observations can keep all the information of the observations and be easily ...
Gen Liu, Xiaohong Zhang, Pan Li
doaj +1 more source