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• W633399051 abstract "The important role assumed by climate and meteorology in the contemporary society is witnessed by the increasing pervasiveness in the last years of several satellite missions, single and cooperative, proposed by NASA, ESA and JAXA, aimed at studying the overall atmosphere, its main elements and their close relations. Such a trend is the result of both a major awareness at global level of the Earth health and the need of better understanding the increasing climatic and meteorological changes recently observed. In the same way, in the telecommunication domain, the low frequency bands crowding and the increase of broadband services diffusion has created the premises for the development of studies on the characterization and the development of telecommunications in the millimetric band not yet explored for this purpose (Q-V bands-35-75 GHz, W band-75-110 GHz). At present, satellite telecommunications at Ka band can be considered a standard for broadband services. However, higher frequencies such as Q-V bands are currently employed for military applications (SICRAL satellite of the Italian Defence Ministry) and soon for scientific applications (TDP#5 payload on-board the ESA Alphabus platform [1]). On the other hand, W band can be considered as the most important scientific frontier within the broadband satellite communications, since no satellite system operating at such a frequency has been developed, just recently through DAVID and WAVE studies [2][3][4]. Considering the convergence of research activities in the field of Telecommunications and Weather and Climate Observations towards the use of millimetre wavelengths, ARES (Advanced Research and Engineering for Space), a consortium constituted both by scientific institutions (the University of Rome Tor Vergata) and industrial partners (Rheinmetall Italy and TECS, TEchnological Consulting Services) has recently proposed to the Italian Space Agency (ASI) a feasibility study to investigate an innovative satellite devoted both to Earth remote sensing and to high frequency telecommunications. Both payloads are based on the common use of millimetric band to exploit the favourable characteristics of such high frequencies. The study is called PLATON (PayLoad for Advanced Telecommunication, Observation and Navigation). PLATON will include a double telecommunication payload based on a Tx/Rx dual system at Ka/W band. Ka band will be devoted to download observation data while W band will be used to experiment W band propagation through a first tropospheric channel characterization. Moreover, a remote sensing payload constituted at least by a W band weather radar (94-96 GHz), devoted to characterize clouds distribution and constitution, and a multispectral radiometer (20-200 GHz) to investigate radiative fluxes through different layers, is foreseen. Complementary payloads could be envisaged to carry out a more extensive and spread atmospheric characterization such as Lidar, to take into account also aerosols and greenhouse gases, multispectral scanner and Fourier Transform Spectrometer. This paper aims at presenting the PLATON study and its main objectives, focusing on three of payloads outlining the main trade-offs which will be considered. The presentation will be focused on the radar and the lidar." @default.
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• W633399051 date "2010-04-01" @default.
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• W633399051 title "PLATON: PayLoad for advanced telecommunication, observation and navigation" @default.
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