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Real time ppp applied to airplane fligtht tests
(2019-01-01)
The availability in real time of GNSS satellites orbits, clock corrections and code and phase biases provided the possibility of application of Real Time Precise Point Positioning (RTPPP). This paper presents the methodology ...
Postprocessing synchronization of a laser scanning system aboard a UAV
(2019-10-01)
Synchronization of airborne laser scanning devices is a critical process that directly affects data accuracy. This process can be more challenging with low-cost airborne laser scanning (ALS) systems because some device ...
Modeling tropospheric wet delays with dense and sparse network configurations for PPP-RTK
(2017-01-01)
Precise Point Positioning (PPP) is a well-known technique of positioning by Global Navigation Satellite Systems (GNSS) that provides accurate solutions. With the availability of real-time precise orbit and clock products ...
Signal Transceiver Transit Times and Propagation Delay Corrections for Ranging and Georeferencing Applications
(HINDAWI PUBLISHING CORPORATIONNEW YORK, 2012)
The accuracy of ranging measurements depends critically on the knowledge of time delays undergone by signals when retransmitted by a remote transponder and due to propagation effects. A new method determines these delays ...
First Brazilian Real Time Network DGPS through the Internet: Development, Application and Availability Analyses
(2012-01-01)
First Brazilian Real Time Network DGPS through the Internet: Development, Application and Availability Analyses: The Global Positioning System (GPS) is widely used by the civil community. Differential GPS (DGPS) was developed ...
Strain rates estimated by geodetic observations in the Borborema Province, Brazil
(Elsevier B.V., 2015-03-01)
The strain rates for the Borborema Province, located in northeastern Brazil, were estimated in this study. For this purpose, we used GNSS tracking stations with a minimum of two years data. The data were processed using ...
Mitigation of receiver biases in ionospheric observables from PPP with ambiguity resolution
(2020-04-15)
PPP (Precise Point Positioning) is a GNSS (Global Navigation Satellite Systems) positioning method that requires SSR (State Space Representation) corrections in order to provide solutions with an accuracy of centimetric ...