Report on the summer school in spectrum management for radio astronomy

2005 ◽  
Vol 47 (4) ◽  
pp. 177-178
Keyword(s):  
Radio Astronomy ◽  
Summer School ◽  
Spectrum Management

scholarly journals Response of the Molonglo Observatory Synthesis Telescope to Terrestrial Interference

1997 ◽  
Vol 14 (3) ◽  
pp. 265-273 ◽  
Author(s):  
D. Campbell-Wilson ◽  
G. Davidson ◽  
M. I. Large
Keyword(s):  
Radio Astronomy ◽  
Experimental Tests ◽  
Spectrum Management ◽  
Management Agency ◽  
International Telecommunications ◽  
Commercial Use ◽  
Extensive Survey

AbstractIn conjunction with the Australian Government's Spectrum Management Agency, experimental tests have been carried out to determine the susceptibility of the Molonglo Observatory Synthesis Telescope (MOST) to interference from terrestrial transmitters. The motivation for the tests was to reconcile the conflicting requirements of the MOST, which is committed to an extensive survey of the southern sky at 843 MHz, with the commercial use of the 825–845 MHz band, which is being prepared for sale. The tests show that the far sidelobe gain of the MOST, relative to an isotropic antenna is generally less than 1, and that an appropriate interference criterion would be that in-band interference irradiance should not exceed −173 dBWm−2. This value is similar to that considered by the International Telecommunications Union to be detrimental to radio astronomy continuum observations at nearby frequencies.

scholarly journals Radio quiet, please! – protecting radio astronomy from interference

2009 ◽  
Vol 5 (S260) ◽  
pp. 457-464 ◽  
Author(s):  
W. van Driel
Keyword(s):  
Radio Astronomy ◽  
Radio Spectrum ◽  
Spectrum Management ◽  
International Telecommunication Union ◽  
Frequency Bands ◽  
International Telecommunication ◽  
Regulatory Limits ◽  
Regulatory Bodies ◽  
Precious Resource ◽  
Regulatory Measures

AbstractThe radio spectrum is a finite and increasingly precious resource for astronomical research, as well as for other spectrum users. Keeping the frequency bands used for radio astronomy as free as possible of unwanted Radio Frequency Interference (RFI) is crucial. The aim of spectrum management, one of the tools used towards achieving this goal, includes setting regulatory limits on RFI levels emitted by other spectrum users into the radio astronomy frequency bands. This involves discussions with regulatory bodies and other spectrum users at several levels – national, regional and worldwide. The global framework for spectrum management is set by the Radio Regulations of the International Telecommunication Union, which has defined that interference is detrimental to radio astronomy if it increases the uncertainty of a measurement by 10%. The Radio Regulations are revised every three to four years, a process in which four organisations representing the interests of the radio astronomical community in matters of spectrum management (IUCAF, CORF, CRAF and RAFCAP) participate actively. The current interests and activities of these four organisations range from preserving what has been achieved through regulatory measures, to looking far into the future of high frequency use and giant radio telescope use.

Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications

2018 ◽  
Author(s):  
Karl F. Warnick ◽  
Rob Maaskant ◽  
Marianna V. Ivashina ◽  
David B. Davidson ◽  
Brian D. Jeffs
Keyword(s):  
Remote Sensing ◽  
Radio Astronomy ◽  
Phased Arrays ◽  
Satellite Communications

Essentials of Modern Spectrum Management

2007 ◽  
Author(s):  
Martin Cave ◽  
Chris Doyle ◽  
William Webb
Keyword(s):  
Spectrum Management

Evaluation of a Summer-School Program for Highly Gifted Secondary-School Students: The German Pupils Academy

2002 ◽  
Vol 18 (3) ◽  
pp. 214-228 ◽  
Author(s):  
Heinz Neber ◽  
Kurt A. Heller
Keyword(s):  
Secondary School ◽  
Summer School ◽  
Secondary School Students ◽  
Social Cognitive ◽  
Gifted Students ◽  
School Program ◽  
School Students ◽  
Positive Effects ◽  
Regulatory Strategies ◽  
Cognitive Framework

Summary The German Pupils Academy (Deutsche Schüler-Akademie) is a summer-school program for highly gifted secondary-school students. Three types of program evaluation were conducted. Input evaluation confirmed the participants as intellectually highly gifted students who are intrinsically motivated and interested to attend the courses offered at the summer school. Process evaluation focused on the courses attended by the participants as the most important component of the program. Accordingly, the instructional approaches meet the needs of highly gifted students for self-regulated and discovery oriented learning. The product or impact evaluation was based on a multivariate social-cognitive framework. The findings indicate that the program contributes to promoting motivational and cognitive prerequisites for transforming giftedness into excellent performances. To some extent, the positive effects on students' self-efficacy and self-regulatory strategies are due to qualities of the learning environments established by the courses.

Sign in / Sign up

Export Citation Format

Share Document