Results 151 to 160 of about 5,388 (217)

Application of Biphase Complete Complementary Code for Ionospheric Sounding. [PDF]

open access: yesSensors (Basel), 2018
Yang G   +7 more
europepmc   +1 more source

Comparison of the Traditional Ionosonde and the Digital Ionosonde Based on Direct Digitization

IEEE Geoscience and Remote Sensing Letters, 2017
A new digital ionosonde based on direct digitization has been developed in the Electronic Information School of Wuhan University. There is no stage of frequency translation between the baseband and the radio frequency, and the realization of the direct digitization greatly simplifies the architecture to achieve optimized design. It is compared with the
Gang Chen, Xiao Cui, Lei Qiao
exaly   +2 more sources

A Comparison of Sporadic-E Occurrence Rates Using GPS Radio Occultation and Ionosonde Measurements

open access: yesRemote Sensing, 2022
Sporadic-E (Es) occurrence rates from Global Position Satellite radio occultation (GPS-RO) measurements have shown to vary by a factor of five between studies, motivating the need for a comparison with ground-based measurements.
Daniel Emmons   +2 more
exaly   +2 more sources

3-D Computerized Ionospheric Tomography With GPS, SAR, and Ionosonde

IEEE Transactions on Geoscience and Remote Sensing, 2023
The Global Positioning System (GPS)-based computerized ionospheric tomography (CIT) has the capacity to reconstruct the 3-D ionosphere (i.e., electron density distribution), making it one of the most important techniques for ionospheric observation ...
Cheng Wang   +4 more
semanticscholar   +1 more source

A comparison of ionosonde measured foF2 and IRI-2016 predictions over China

open access: yesAdvances in Space Research, 2019
A comparison of the ionospheric F-region critical frequency (foF2) between ionosonde measurements and IRI-2016 predictions is studied over China during the period from January 2008 to October 2016.
Zhendi Liu, Xing Meng
exaly   +2 more sources

Large-Scale Ionospheric Irregularities Detected by Ionosonde and GNSS Receiver Network

IEEE Geoscience and Remote Sensing Letters, 2021
Large-scale ionospheric irregularities, which occurred on September 8, 2017, were detected by the ionosonde and the Global Navigation Satellite System (GNSS) receiver network in this letter. The Wuhan ionospheric sounding system (WISS), deployed at Puer (
Chunhua Jiang   +7 more
semanticscholar   +1 more source

Ionosond-MS ionosonde receiving antenna system

2020 7th All-Russian Microwave Conference (RMC), 2020
The article contains description of the Ionosonde-MS chirp sounder receiving antenna system that was refined upon for instrumental separation of received signals of vertical and near-vertical incidence sounding based on polarization characteristics. The results of its modelling and measured characteristics in the entire range of working frequencies are
Aleksei Podlesnyi   +2 more
openaire   +1 more source

Seismo-ionospheric anomalies before the 2019 Mirpur earthquake from ionosonde measurements

Advances in Space Research, 2021
The rapid advancement in ground and space based ionospheric measurements provide an opportunity to work on different earthquake precursors for lithosphere-ionosphere coupling hypothesis.
Junaid Ahmed   +8 more
semanticscholar   +1 more source

Design of an Ultrawideband Ionosonde

IEEE Geoscience and Remote Sensing Letters, 2015
In this letter, an ultrawideband ionospheric sounding system was designed for ionospheric research and communication channel management. The frequency band of this ionosonde ranges from high frequency to very high frequency. It can be flexibly used at both monostatic and bistatic stations as a GPS receiver module was integrated.
Hengqing Sun   +4 more
openaire   +1 more source

The universal digital ionosonde

Radio Science, 1978
The digital ionospheric sounding system Digisonde 128PS explores ionospheric structure and dynamics by exploiting all observables of the reflected electromagnetic wave: range, amplitude, phase, Doppler, incidence angle, and wave polarization. The Digisonde operates in two complementary modes of observation: the Ionogram Mode with full range and ...
Klaus Bibl, Bodo W. Reinisch
openaire   +1 more source

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