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W, A. Pavj-.:S VA -R,&2. ~L W, A. PaVJ-.:s VA -r,&2._~L NATIONAL ACADEMIES OF SCIENCE AND ENGINEERING NATIONAL RESEARCH COUNCIL of the UNITED STATES OF AMERICA UNITED STATES NATIONAL COMMITTEE International Union of Radio Science, National Radio Science Meeting 5-8 January 1993 Sponsored by USNC/URSI in cooperation with Institute of Electrical and Electronics Engineers University of Colorado Boulder, Colorado U.S.A. National Radio Science Meeting 5-8 January 1993 Condensed Technical Program Monday, 4 January 2000-2400 USNC-URSI Meeting Broker Inn Tuesday, 5 January 0835-1200 B-1 ANTENNAS CRZ-28 0855-1200 A-1 MICROWAVE MEASUREMENTS CRl-46 D-1 MICROWAVE, QUASisOPTICAL, AND ELECTROOPTICAL DEVICES CRl-9 G-1 COORDINATED CAMPAIGNS AND ACTIVE EXPERIMENTS CR0-30 J/H-1 RADIO AND RADAR ASTRONOMY OF THE SOLAR SYSTEM CRZ-26 1335-1700 B-2 SCATIERING CR2-28 F-1 SENSING OF ATMOSPHERE AND OCEAN CRZ-6 G-2 IONOSPHERIC PROPAGATION CHANNEL CR0-30 J/H-2 RADIO AND RADAR ASTRONOMY OF THE SOLAR SYSTEM CR2-26 1355-1700 A-2 EM FIELD MEASUREMENTS CRl-46 D-2 OPTOELECTRONICS DEVICES AND APPLICATION CRl-9 1700-1800 Commission A Business Meeting CRl-46 Commission C Business Meeting CRl-40 Commission D Business Meeting CRl-9 Commission G Business Meeting CR0-30 Wednesday, 6 January 0815-1200 PLENARY SESSION MATH 100 1335-1700 B-3 EM THEORY CRZ-28 D-3 MICROWAVE AND MILLIMETER AND RELATED DEVICES CRl-9 F-2 PROPAGATION MODELING AND SCATTERING CRZ-6 H-1 PLASMA WAYES IN THE IONOSPHERE AND THE MAGNETOSPHERE CRl-42 J-1 FIBER OPTICS IN RADIO ASTRONOMY CR2-26 1355-1700 E-1 HIGH POWER ELECTROMAGNETICS (HPE) AND INTERFERENCE PROBLEMS CRl-40 United States National Committee INTERNATIONAL UNION OF RADIO SCIENCE PROGRAM AND ABSTRACTS National Radio Science Meeting 5-8 January 1993 Sponsored by USNC/URSI in cooperation with IEEE groups and societies: Antennas and Propagation Circuits and Systems Communications Electromagnetic Compatibility Geoscience Electronics Information Theory ,. Instrumentation and Measurement Microwave Theory and Techniques Nuclear and Plasma Sciences Quantum Electronics and Applications NOTE: Programs and Abstracts of the USNC/URSI Meetings are available from: USNC/URSI National Academy of Sciences 2101 Constitution Avenue, N.W. Washington, OC 20418 at $5 for 1983-1993 meetings. The full papers are not published in any collected format; requests for them should be addressed to the authors who may have them published on their own initiative. Please note that these meetings are national. They are not organized by the International Union, nor are the programs available from the International Secretariat. ii MEMBERSHIP United States National Committee INTERNATIONAL UNION OF RADIO SCIENCE Chairman: Chalmers M. Butler* Vice Chairman: David C. Chang* Secretary: Charles M. Rush* Immediate Past Chairman: Sidney A. Bowhill* Members Representing Societies, Groups, and Institutes: American Geophysical Union Dr. George W. Reid American Astronomical Society Dr. William]. Welch IEEE Antennas & Propagation Society Dr. W. Ross Stone IEEE Microwave Theory and Techniques Society Dr. A. A. Oliner IEEE Geosciences and Remote Sensing Society Dr. Robert E. McIntosh American Meterological Society Dr. Richard Hallgren Members-at-Large: Dr. Susan Avery Dr. Lewis Duncan Dr. Robert Mattauch Dr. R. M. Price Dr. David J. Thompson Dr. Donald Wilton Liaison Representatives from Government Agencies: National Telecommunications & Information Administration Mr. Kenneth Allen National Science Foundation M. Kent Wilson Federal Communications Commission Department of Defense Mr. William]. Cook Department of the Army Mr. Earl J. Holliman Department of the Air Force Dr. Allan C. Schell Chairmen of the USNC/URSI Commissions: Commission A Dr. Motohisa Kanda Commission B Dr. Ralph E. Kleinman Commission C Dr. Raymond Pickholtz Commission D Dr. James W. Mink Commission E Dr. Emil F. Soderberg Commission F Dr. Juergen H. Richter Commission G Dr. Haim Soicher Commission H Dr. William Taylor Commission J Dr. James M. Moran Commission K Dr. James C. Lin * Member ofUSNC/URSI Executive Committee iii Chairmen and Vice Chairmen of Commissions ofURSI resident in the United States: Vice Chairman, Commission C Dr. A. D. Wyner Vice Chairman, Commission D Dr. T. Itoh Vice Chairman, Commission F Prof. R. K. Moore Chairman, Commission H Dr. R. F. Benson Foreign Secretary of the U.S. National Academy of Sciences Dr. James B. Wyngaarden Chair, Commission on Physical Sciences, Mathematics, and Applications, National Research Council Prof. Richard N. Zare Chair, Board on Physics and Astronomy, Commission on Physical Sciences, Mathematics, and Applications, National Research Council Prof. Charles Kennel Honorary Members Dr. Harold H. Beverage Dr. Ernst Weber Director, Board on Physics and Astronomy, Commission on Physical Sciences, Mathematics, and Applications, National Research Council Dr. Donald C. Shapero NRC Program Officer, U.S. National Committee for URSI Dr. Robert L. Riemer iv DESCRIPTION OF THE INTERNATIONAL UNION OF RADIO SCIENCE The International Union of Radio Science is one of 18 world scientific unions organized under the International Council of Scientific Unions (ICSU). It is commonly designated as URSI (from its French name, Union Radio Scientifique Internationale). Its aims are (1) to promote the scientific study of radio communications, (2) to aid and organize radio research requiring cooperation on an international scale and to encourage the discussion and publication of the results, (3) to facilitate agreement upon common methods of measurement and the standardization of measuring instruments, and ( 4) to stimulate and to coordinate studies of the scientific aspects of telecommunications using electromagnetic waves, guided and unguided. The International Union itself is an organizational framework to aid in promoting these objectives. The actual technical work is largely done by the National Committee in the various countries. The officers of the International Union are: President: E. V. Juli (Canada) Past President: Dr. A. L. Cullen (U.K.) Vice Presidents: Prof. J. Bach Anderson (Denmark) Dr. P. Bauer (France) R. L. Dowden (N.Z) ProfT. O'Koshi (Japan) Secretary-General J. Van Bladel (Belgium) Honorary Presidents: G. Beynon (U.K.) W. Dieminger (West Germany) W. Christiansen (Australia) W. Gordon (U.S.A.) F. L. H. M. Stumpers (Netherlands) The Secretary-General's office and the headquarters of the organization are located at Avenue Albert Lancaster, 32, B-1180 Brussels, Belgium. The Union is supported by contributions (dues) from 38 member countries. Additional funds for symposia and other scientific activities of the Union are provided by ICSU from contributions received for this purpose from UNESCO. The International Union, as of the XX th General Assembly held in Washington, DC in August 1981, has nine bodies called Commissions for centralizing studies in the principal technical fields. V Every three years the International Union holds a meeting called the General Assembly. The next is the XXIVth, to be held in August of 1993, in Kyoto. The Secretariat prepares and distributes the Proceedings of the General Assemblies. The International Union arranges international symposia on specific subjects pertaining to the work of one or several Commissions and also cooperates with other Unions in international symposia on subjects of joint interest. Radio is unique among the fields of scientific work in having a specific adaptability to large-scale international research programs, since many of the phenomena that must be studied are worldwide in extent and yet are in a measure subject to control by experimenters. Exploration of space and the extension of scientific observations to the space environment are dependent on radio for their research. One branch, radio astronomy, involves cosmic phenomena. URSI thus has a distinct field of usefulness in furnishing a meeting ground for the numerous workers in the manifold aspects of radio research; its meetings and committee activities furnish valuable means of promoting research through exchange of ideas. Steering Committee: S. Avery, Chairman (303) 492-7427 D.Cook P. L.Jensen Technical Program Committee: C. M. Rush, Chairman J. Moran S. Avery J. Richter I. Besieris E. Soderberg M. Kanda H. Soicher R. Kleinman W. Taylor J. Mink vi Tuesday Morning, 5 January, 0855-1200 SessionA-1 0855-Tues. CRl-46 MICROWAVE MEASUREMENTS Chairman: Allen C. Newell, Electromagnetic Fields Division, National Institute of Standards and Technology, Boulder, CO 80303 Al-1 A NEW ONE-WAY, TWO-PORT NETWORK ANALYZER 0900 CALIBRATION: REFLECT-THRU'-LINE (RTL) Prof. W.A. Davis*, Dr. D.M. Keller, & M.W. Ditz The Bradley Department of Electrical Engineering Virginia Polytechnic Institute and State University Blacksburg, VA 24061-0111 Calibration of two-port systems for the measurement of non-linear characteristics is presented in this paper. Classically two-port measurement systems are calibrated for a source to be fed to both the input or the output of the system or alternatively requiring reversal of the device under test. A new form of calibration combines the concepts of the Thru'-Reflect-Line (TRL) form of calibration with the concept of load-pull measurement process common to power­ amplifier measurements. Indeed, the basic measurements to be determined in such a calibration for large-signal, non-linear devices are the input reflection coefficient and the transmission coefficient (or gain) as a function of the input drive level and the load impedance or load reflection coefficient. To implement such a measurement system, a one-way measurement structure is implied, rather than the often used two-source system. A set of two dual-directional couplers and a variable load may be used to construct this system along with a network analyzer type of measurement device. The error terms include the three input reflection coefficient terms, a transmission coefficient, a source-ratio term for determining the load, and associated cross-talk and directivity terms. The necessary cross-talk and directivity terms include the leakage from the source to both the transmission and source-ratio measurement ports as well as the leakage from the output and load ports to both the transmission and source-ratio measurement ports.
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