Commission A: The commission promotes research and development in the field of measurement standards, in calibration and measurement methodologies, and the intercomparison of such. Areas of emphasis are: 1.The development and refinement of new measurement techniques; 2. Primary standards, including those based on quantum phenomena; 2. Realization and dissemination of time and frequency standards; 3. Characterization of the electromagnetic properties of materials; 4. Electromagnetic dosimetry. The commission fosters accurate and consistent measurements needed to support research, development and exploitation of electromagnetic technologies across the spectrum.

Commission B: The interest of Commission B is fields and waves, encompassing theory, analysis, computation, experiments, validation and applications. Areas of emphasis are: 1. Time-domain and frequency-domain phenomena; 2. Scattering and diffraction; 3. General propagation including waves in specialised media; 4. Guided waves; 5. Antennas and radiation; 6. Inverse scattering and imaging. The Commission fosters the creation, development, and refinement of analytical, numerical, and measurement techniques to understand these phenomena. It encourages innovation and seeks to apply interdisciplinary concepts and methods.

Commission C: The Commission promotes research and reviews new development in : 1. Radio-Communication and Telecommunication systems; 2. Spectrum and Medium Utilisation; 3. Information Theory, Coding, Modulation and Detection; 4. Signal and Image Processing in the area of radio science. The design of effective radio-communication systems must include scientific, engineering and economic considerations. This Commission emphasises research into the scientific aspects, and provides enabling technologies to other areas of radio science.

Commission D: The Commission promotes research and reviews new development in: 1. Electronic devices, circuits, systems and applications; 2. Photonic devices, systems and applications; 3. Physics, materials, CAD, technology and reliability of electronic and photonic devices down to nanoscale including quantum devices, with particular reference to radio science and telecommunications. The Commission deals with devices for generation, detection, storage and processing of electromagnetic signals together with their applications from the low frequencies to the optical domain.

Commission E: The Commission promotes research and development in: 1. Terrestrial and planetary noise of natural origin, seismic associated electromagnetic fields; 2. Man-made noise; 3. The composite noise environment; 4. The effects of noise on system performance; 5. The lasting effects of natural and intentional emissions on equipment performance; 6. The scientific basis of noise and interference control, electromagnetic compatibility; 7. Spectrum management.

Commission F: The Commission promotes research and reviews new development in: 1. The study of all frequencies in a non-ionised environment : (i) wave propagation through planetary, neutral atmospheres and surface (ii) wave interaction with the planetary atmospheres, surfaces (including land, ocean and ice), and subsurfaces; (iii) characterisation of the environment as it affects wave phenomena; 2. The application of the results of these studies, particularly in the areas of remote sensing and communications; 3. The appropriate co-operation with other URSI Commissions and other relevant organisations.

Commission G: The Commission deals with the study of the ionosphere in order to provide the broad understanding necessary to support space and ground-based radio systems. Specifically, the Commission addresses the following areas:1. Global morphology and modelling of the ionosphere; 2. Ionospheric space-time variations; 3. Development of tools and networks needed to measure ionospheric properties and trends; 4. Theory and practice of radio propagation via the ionosphere; 5.Application of ionospheric information to radio system.

Commission H: The goals of the Commission are: 1.To study waves in plasmas in the broadest sense, and in particular:(i) the generation ( i.e. Plasma instabilities) and propagation of waves in plasmas, (ii) the interaction between these waves, and wave-particle interactions, (iii) plasma turbulence and chaos, (iv) spacecraft-plasma interaction ; 2. To encourage the application of these studies, particularly in the areas of solar/planetary plasma interactions, and an increased exploitation of space as a research laboratory.

Commission J: The activities of the Commission are concerned with observation and interpretation of all radio emissions and reflections from celestial objects. Emphasis is placed on: (i) the promotion of technical means for making radio-astronomical observations and data analysis, (ii) support of activities to protect radio-astronomical observations from harmful interference, (iii) support of Outreach and Science Education toward students and the general public.

Commission K: The commission's interest area of interest is defined as the interactions of electromagnetic radiation with living systems from DC to optical frequencies and their applications in medicine, and promotion of research and development in the domain of: 1. Biological effects of electromagnetic fields; 2. Interaction mechanisms; 3. Human exposure assessment; 4. Experimental exposure systems; 5. Physical interactions of electromagnetic fields with biological systems; 6. Medical applications → Medical and biological applications.

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