Results 111 to 120 of about 1,130 (254)

GNSS Remote Sensing:Overview and selected recent developments [PDF]

open access: yes, 2022
Ponencia expuesta online en el 8th International Radio Occultation Working Group Meeting (2021) celebrado del 7 al 9 de abrilGround and satellite based GNSS Remote Sensing (GNSS-RS) developed during the recent two decades into a very powerful and ...
Arras, C.   +12 more
core  

Telecommunications. He received a BSc in Aerospace [PDF]

open access: yes
2010, he was a Principal Engineer (Algorithms) at SigNav Pty Ltd where he worked for 15 years on GPS embedded firmware and algorithm development.
A. G. Dempster   +6 more
core  

Polarimetric GNSS RO aboard the PAZ satellite

open access: yes, 2020
Talk delivered in Informal Seminar UK MetOffice in Great Britain, 21 February 2020 ,
openaire   +1 more source

Global Empirical Model of Sporadic-E Occurrence Rates [PDF]

open access: yes
Intense ionization enhancements in the Earth’s ionosphere, known as sporadic-E (Es), can degrade and severely disrupt the propagation of radio signals. Although many previous studies have analyzed the characteristics and morphologies of sporadic-E, few ...
Dao, Eugene V.   +6 more
core   +2 more sources

Quality Assessment of YUNYAO GNSS-RO Refractivity Data in the Neutral Atmosphere

open access: yes
Abstract. GNSS (Global Navigation Satellite System) Radio Occultation (RO) data is an important component of numerical weather prediction (NWP) systems. To incorporate more GNSS RO data into NWP systems, commercial RO data has become an excellent option. Tianjin Yunyao Aerospace Technology Co., Ltd.
Xiaoze Xu   +6 more
openaire   +2 more sources

A Novel Sampling Approach in GNSS-RO Receivers with Open Loop Tracking Method

open access: yesAUT Journal of Electrical Engineering, 2019
Propagation of radio occultation (RO) signals through the lower troposphere results in high phase acceleration and low signal to noise ratio signal. The excess Doppler estimation accuracy in lower troposphere is very important in receiving RO signals which can be estimated by sliding window spectral analysis.
openaire   +2 more sources

Potential earthquake proxies from remote sensing data [PDF]

open access: yes
At present, there is no clear scientific evidence of reliable earthquake precursors that can be used as an early warning system. However, many studies have also reported the existence of faint signatures that appear to be coupled to the occurrence of ...
Boudriki Semlali, Badr Eddine   +4 more
core   +1 more source

Ionospheric scintillation in GNSS signals: a tool for earth observation [PDF]

open access: yes
(English) This PhD thesis is intended to study ionospheric scintillation and its relationship with some of its sources, in particular the observed correlation between the ionospheric perturbation and the lithosphere. However, before addressing this topic,
Molina Ordóñez, Carlos
core   +1 more source

The Potential for Observing African Weather with GNSS Remote Sensing

open access: yesAdvances in Meteorology, 2015
When compared to the wide range of atmospheric sensing techniques, global navigation satellite system (GNSS) offers the advantage of operating under all weather conditions, is continuous, with high temporal and spatial resolution and high accuracy, and ...
Olalekan A. Isioye   +3 more
doaj   +1 more source

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