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Pulse compression HF Radar for ionospheric sounding

AIS is acronim of Advanced Ionospheric Sounder; it has been completely developed and realized at INGV in Rome.

The aim of this new digital ionosonde is to fulfil the request to have a simple and reliable system to sound the ionosphere.
To do this a system has been designed by the Development Laboratory for Radio Frequency Technologies of the Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, in which the most advanced HF radar techniques have been employed.

The principal objective is to reduce the transmitted power as well as weight, size, power consumption and hardware complexity maintaining high reliability.

To compensate the power reduction a complementary phase code is employed along with pulse-compression and a phase coherent integration, giving the possibility to investigate the ionosphere with a power of 200W only.
The ionosonde is completely programmable and the data acquisition, control, storage and on-line processing are supported by a PC.
This allows the system to send ionograms through the Internet and makes remote control possible.


Figure 1"AIS" working at the Gibilmanna observatory




This invention has obtained a national patent by the UIBM.

Details of the patent: n. 1325371 released on 12/07/2004 for the industrial invention entitled: “Ionosonda digitale”.

Patent holder: Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, Roma.

Inventors: Cesidio Bianchi, Enrico Zuccheretti, Umberto Sciacca, Giuseppe Tutone, James Baskaradas Arokiasamy, Carlo Scotto, Michael Pezzopane.




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