- ISC: International Science Council
…The International Science Council (ISC) was created in 2018 as the result of a merger between the International Council for Science (ICSU) and the International Social Science Council (ISSC). The ISC is a non-governmental organization with a unique global membership
that brings together over 200 international scientific unions and associations as well as national and regional scientific organizations including academies and research councils.
ISC’s headquarters ： Paris
- IAU: International Astronomical Union
…The International Astronomical Union (IAU) was founded in 1919 to promote and safeguard the science of astronomy in all its aspects,
including research, communication, education and development, through international cooperation.
IAU’s Secretariat ： Paris
- COSPAR: Committee on Space Research
…COSPAR was established to promote at an international level scientific research in space, with emphasis on the exchange of results, information and opinions, and to provide a forum, open to all scientists,
for the discussion of problems that may affect scientific space research.
- URSI: International Union of Radio Science Union Radio-Scientifique Internationale
…The International Union of Radio Science (Union Radio-Scientifique Internationale), a non-governmental and non-profit organization under the International Council for Science,
is responsible for stimulating and coordinating, on an international basis, studies, research, applications, scientific exchange, and communication in the fields of radio science.
URSI is organized into 10 scientific commissions, each of which covers a specific piece of the spectrum and associated technical applications. The Commissions are: Electromagnet Metrology,
Fields and waves, Radiocommunication Systems and Signal Processing, Electronics and Photonics, Electromagnetic Environment and Interference, Wave Propagation and Remote Sensing,
Ionospheric Radio and Propagation, Waves in Plasmas, Radio Astronomy, and Electromagnetics in Biology and Medicine.
- IUCAF: Scientific Committee on Frequency Allocations for Radio Astronomy and Space Science
…IUCAF is an international committee (set up in 1960 by URSI, IAU, and COSPAR) that works in the field of spectrum management on behalf of the passive radio sciences, like radio astronomy,
remote sensing, space research, and meteorological remote sensing.
- ITU: International Telecommunication Union
…The International Telecommunication Union (ITU) is the United Nations specialized agency for information and communication technologies- ICTs.
ITU was founded in 1865 to facilitate international connectivity in communications networks. It allocates global radio spectrum and satellite orbits, develops the technical standards that ensure networks and technologies seamlessly
interconnect, and strives to improve access to ICTs to underserved communities worldwide. ITU has three specialized Sectors; ITU Radiocommunication Sector (ITU-R), ITU Telecommunication Standardization Sector (ITU-T) and ITU Telecommunication Development Sector (ITU-D).
The Radiocommunication Bureau, organized under the Radiocommunication Sector, regularly organizes conferences and meetings as well as bi-annual seminars/workshops on frequency management and radiocommunication systems.
- WRC: World Radiocommunication Conference
…World radiocommunication conferences (WRC) are held by ITU-R every three to four years to review, and, if necessary, revise the Radio Regulations, the international treaty governing the use of the radio-frequency spectrum
and the geostationary-satellite and non-geostationary-satellite orbits. Revisions are made on the basis of an agenda determined by the ITU Council, which takes into account recommendations made by previous world radiocommunication conferences.
- RA: Radiocommunication Assemblies (Formerly known as CCIR, International Radiocommunication Consultative Committee)
…Radiocommunication Assemblies (RA) are held by ITU-R and are responsible for the structure, program and approval of radiocommunication studies. They are normally convened every three or four years.