Radio Science Bulletin 325 - June 2008 - URSI

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URSI Forum on Radio Scienceand TelecommunicationsApplications implemented through radiocommunication are exploding. This trend is likely toaccelerate and, accordingly, the operation of many passiveand active radio services will become dependent on thereliability of the new communication systems. All scientistsengaged in radio-science activities must be aware of potentialchallenges and novel developments, and should be in aposition to express their interest or/and concern. It is theobjective of the “Forum on Radio Science andTelecommunications,” organized on August 15 during the2008 URSI GA in Chicago, to provide information, and toencourage exchanges on all domains of radio science andtheir relation to telecommunications.The Forum will address the potential and challengesof novel developments in wireless telecommunications,which are of prime importance to anyone involved in radioscience and system development, both from a user’s and apolicy maker’s standpoint. It will have four invited papersof 40 minutes (25 minutes presentation plus 15 minutesdiscussion time) each, followed by a panel discussion. Thepapers will aim at stimulating discussions. The paneldiscussion of 40 minutes will focus on possible activities/actions for URSI to deploy in this area.The following subjects will be presented and discussed:1. “Cognitive Radio” by Hiroshi Harada (JP)Wireless systems in which the networks and/or the radiostations are sufficiently intelligent to provide and/or use(“grab”) radio resources flexibly and adaptively;2. “Ultra-wideband Wireless Systems” by Andy Molisch(USA)Systems employing ultra-large bandwidth and/or signalsof ultra-low spectral density; their unique features,potentials, and weaknesses;3. “Interference Management” by Lilian Jeanty (NL)Novel methods to protect communication and remotesensingsystem integrity and to regulate spectrum usagein a dynamic and flexible manner, while catering toultra-wideband and intelligent radio systems;4. Health aspects of the proliferation of wirelesscommunications in a deregulated arena by NielsKuster (CH).For the panel discussion, brief interventions (twominutes) may be prepared to complete the information or toraise specific points, such as:• Other new trends in radio-system development• Specific issues for the URSI Commissions• New radio-science research areas to be developed inrelation to new wireless services• Possible URSI contributions to international discussions,the development of standards and regulationsThe Forum discussions should result in the definitionof follow-up actions (e.g., by one or more URSI workinggroups) to establish a more permanent role for URSI inrepresenting the interests of radio science in worldwidediscussions on the development of wireless communications.Gert BrussaardRadicom ConsultantsHendrik van Herenthalslaan 115737 ED Lieshout, NetherlandsTel: +31 499 425430E-mail: gert.brussaard@radicom.nl4TheRadio Science Bulletin No 325 (June 2008)
Receiving the Radio ScienceBulletin for the Next TrienniumThe Radio Science Bulletin has historically been provided in print form by mail to all URSIRadioscientists. URSI Radioscientists are those who have registered for the most-recent past URSIGeneral Assembly (the registration fee includes 40€ as the mandatory fee for becoming an URSIRadioscientist for the triennium), or those who apply to the URSI Secretariat to become URSIRadioscientists (and pay the fee) between General Assemblies. The Bulletin has also been sent inprint form by mail to URSI Member Committees, and some libraries.The costs of printing and mailing the Bulletin have increased dramatically over the pasttriennium, and the Web has become a viable alternative method of disseminating publicationsmuch more rapidly than is possible using ordinary mail. The version of the Bulletin available viathe Web is also in color, in contrast to the printed version. In the interest of controlling costs andbeing able to continue to provide the Radio Science Bulletin to all URSI Radioscientists, at its Maymeeting the URSI Board decided to adopt a new policy for delivering the Bulletin in the comingtriennium. Beginning with the XXIXth General Assembly in Chicago, 40€ will continue to beincluded as a required part of the registration fee to become an URSI Radioscientist (this is theapproximate current cost of producing and publishing the Bulletin for the triennium, without thecost of printing and mailing individual copies). Starting with the March 2009 issue, all URSIRadioscientists will receive an e-mail alert when the Bulletin is available for download from theURSI Web site. If an URSI Radioscientist wishes to continue to receive a printed copy of theBulletin by mail, he or she may pay an additional optional fee of 60€ to cover the printing andmailing costs for the triennium. Printed copies of the Bulletin will continue to be sent to MemberCommittees and libraries.TheRadio Science Bulletin No 325 (June 2008) 5
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GPS : A Powerfull Tool forTime Tran
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altitude of ~26562 km will tick mor
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Each component of the errors is ass
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Table 5. The capabilities of GPS ti
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12. References1. C. Audoin and J. V
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ConferencesCONFERENCE REPORT12TH IN
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URSI CONFERENCE CALENDARURSI cannot
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The Journal of Atmospheric and Sola
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APPLICATION FOR AN URSI RADIOSCIENT
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Radio Science Bulletin 325 - June 2008 - URSI

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