Propagation characteristics of sporadic E and medium-scale traveling ionospheric disturbances (MSTIDs): statistics using HF Doppler and GPS-TEC data in Japan

Detection and Modeling of Medium-Scale Travelling Ionospheric Disturbances in Iran Region

Ionosphere layer variations are divided into regular and irregular. Regular changes can be considered as daily changes, changes depending on latitude and changes due to solar activity. Travelling Ionospheric Disturbances (TID) is one of the irregular changes of ionosphere which categorized in small, medium and large scales. Medium-scale Travelling Ionospheric Disturbance (MSTID) which are propa...

First simultaneous observations of daytime MSTIDs over North America using GPS-TEC and DEMETER satellite data

Observations by the CUTLASS radar, HF Doppler, oblique ionospheric sounding, and TEC from GPS during a magnetic storm

Multi-diagnostic observations, covering a significant area of northwest Europe, were made during the magnetic storm interval (28–29 April 2001) that occurred during the High Rate SolarMax IGS/GPS-campaign. HF radio observations were made with vertical sounders (St. Petersburg and Sodankyla), oblique incidence sounders (OIS), on paths from Murmansk to St. Petersburg, 1050 km, and Inskip to Leice...

Generation of Artificial Acoustic-Gravity Waves and Traveling Ionospheric Disturbances in HF Heating Experiments

We report the results of our ionospheric HF heating experiments to generate artificial acoustic-gravitywaves (AGW) and traveling ionospheric disturbances (TID),whichwere conducted at theHigh-frequencyActiveAuroral Research Program facility inGakona, Alaska. Based on the data from UHF radar, GPS total electron content, and ionosonde measurements, we found that artificialAGW/TID can be generated ...

Interactions Among Ionospheric Propagation, HF Modems, and Data Protocols

The well-known challenges in using the ionospheric skywave channel for data communications have been increasingly well-addressed by recent generations of HF data modems and link protocols. However, the means used to cope with the skywave channel present unusual challenges to Internet-style networkand application-layer protocols, which have been designed with reliable, high-bandwidth channels in...