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Abstract
An Advanced Ionospheric Sounder, built at the Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy, was installed at Tucuman, Argentina, particularly interesting for its location, near the southern peak of the ionospher- ic equatorial anomaly. The aim of this installation is to collect a large number of continuous data useful both to study the dynamics of the equatorial ionospheric plasma and to develop reliable regional ionospheric prediction models. Moreover this ionosonde will contribute to the ionospheric database and real time knowledge of South- ern Hemisphere ionospheric conditions for space weather applications. The ionosonde is completely program- mable and two PCs support the data acquisition, control, storage and on-line processing. In this work the first results, in terms of ionograms and autoscaled characteristics, are presented and briefly discussed.
Highlights
IntroductionFor such a purpose ionospheric sounders should have some distinctive features, especially oriented towards routine service, like Internet connection and the possibility to perform an automatic scaling of the recorded ionograms in real time
Since the early years of the last century, ionospheric measurements have played a significant role in studies concerning ionospheric physics and related phenomena
This paper briefly describes the main characteristics of the AIS-INGV/Autoscala system installed at Tucumán, and it illustrates the first results of the operating ionospheric station, in terms of recorded ionograms and autoscaled characteristics
Summary
For such a purpose ionospheric sounders should have some distinctive features, especially oriented towards routine service, like Internet connection and the possibility to perform an automatic scaling of the recorded ionograms in real time. This paper briefly describes the main characteristics of the AIS-INGV/Autoscala system installed at Tucumán, and it illustrates the first results of the operating ionospheric station, in terms of recorded ionograms and autoscaled characteristics The aim of this ionosonde is to fulfil the demand to have a simple low-cost system to sound the ionosphere. If only the ordinary component is recorded the output corresponds to foEs, while if only the extraordinary component is recorded the output corresponds to fxEs. The ionograms recorded by AIS-INGV show both components and as a consequence the Es routine limits itself to give as output ftEs (defined as the top frequency of the Es layer according to Wakai et al, 1987) being unable to specify this value as foEs or fxEs. The technique relies on a set of curves having the typical shape of the Es layer. The processing time of Autoscala is approximately 50 s on a computer with 1.60 GHz processor and 512 MB of RAM
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