Definitions

meped

List of radio propagation topics

This is a list of radio propagation terms.

A

a index - A-index - aa index - active prominence - active prominence region (APR) - active region - active surge region (ASR) - active dark filament (ADF) - AE index - Air Force Geophysics Laboratory (AFGL) - arch filament system (AFS) - Air Force Space Forecast Center (AFSFC) - ak index - Alfven wave - Alaskan Meteorological Data System (ALMEDS) - am index - amateur radio bands - Radio Amateur Satellite Corporation (AMSAT) - An index - anomalous propagation - antenna height above average terrain - ap index - aphelion - apogee - arcade (solar physics) - arch filament system - Area to Area Lee Model - American Radio Relay League (ARRL) - As index - American Standard Code for Information Interchange (ASCII) - atmospheric duct - atmospherics - aurora - auroral electrojet - auroral oval - AUTODIN - autumnal equinox - Air Weather Service (AWS) -

B

B-angle - background X-ray level - backscatter - Bartels' rotation number - bipolar magnetic region - birefringent filter - blind zone - bow shock - bright point - bright surge on the disk (BSD) - bright surge on the limb (BSL) - brightness temperature - burst (solar physics) - burst transmission - butterfly diagram -

C

C index - Carrington longitude - Cassegrain antenna - Cassegrain reflector - Castelli U - celestial equator - celestial sphere - cellular telephony - centimeter burst - central meridian distance (CMP) - central meridian passage (CMD) - Chapman function - chromosphere - chromospheric event - chromospheric network - Ci index - city model - clutter (radar) - clutter folding - co-channel interference - coherence bandwidth - coherence time - COMEDS - communication with submarines - comprehensive flare index (CFI) - conjugate points - continuum - continuum storm (CTM) - convection - Coordinated Universal Time - corona - coronagraph - coronal hole - coronal loops - coronal mass ejection - coronal rain (CRM) - coronal stream - coronal streamer - coronal transients - corrected geomagnetic coordinates - cosmic noise - cosmic ray - Cost 231 Model - Cp index - Crane Global Model - Crane Model for Satellite Paths - Crane Two Component Model - critical frequency - crochet (solar physics) - CTM - cusp (solar physics) -

D

D component of the geomagnetic field - D region - D-Layer - DAH Model - Disk And Limb Activity Summary (DALAS) - dark surge on the disk (DSD) - decibel - declination - delay spread - differential charging - differential particle flux - differential rotation - dip equator - dipole antenna - directional antenna - disappearing solar filament (DSF) - disparition brusque - diurnal phase shift - diversity scheme - data management system (DMS) - Defense Meteorological Satellite Program (DMSP) - Department Of Commerce (DOC) - Department Of Defense (DOD) - Doppler effect - Doppler shift - dose rate - Dst index - ducting (radio propagation) - DXing -

E

E region - E-layer - E-skip - Early ITU Model - Earth-Moon-Earth - eccentric dipole - eclipse - ecliptic - EFR - Egli Model - EHF - electric beacon - electrojet - electromagnetic electron wave - electrostatic discharge - ELF - emerging flux region - emission line - emission measure - environmental attenuation model - Earth Observing System (EOS) - ephemeris - EPL - equatorial electrojet - equinox - Environmental Research Laboratories (ERL) - eruptive - eruptive prominence on limb - Es-layer - European Space Agency (ESA) - ESD - estimated hemispherical power input - EUV - Evershed effect - exosphere - expert system - extraordinary mode - extreme ultraviolet - extremely high frequency - extremely low frequency -

F

F corona - F region - F-layer - f-spot - F1-layer - F2-layer - facula - fade margin - fading - fading distribution - fibril (solar physics) - filament (solar physics) - filament channel - flare (solar physics) - flutter - FM DX - fmin - foEs - foF2 - follower spot - Forbush decrease - forward scatter - Fraunhofer spectrum - free-space path loss - frequency of optimum transmission - frequency-hopping spread spectrum - Fresnel zone - Friis transmission equation -

G

gamma (unit of magnetic field intensity) - gamma rays - GEOALERT - geocorona - geomagnetic activity - geomagnetic elements - geomagnetic field - geomagnetic storm - geomagnetic storm level - geomagnetic time - geomagnetism - geosynchronous - Geostationary Meteorological Satellite (GMS) - GMT - Geostationary Operational Environmental Satellite (GOES) - GPS - gradual commencement - granule (solar physics) - gray-line - green line - Greenwich Mean Time - ground wave - ground level enhancement (GLE) - ground-level event - group velocity - Goddard Space Flight Center (GSFC) -

H

H alpha - H component - H-component of the geomagnetic field - Hale boundary - High Altitude Observatory (HAO) - Hata Model for Open Areas - Hata Model for Suburban Areas - Hata Model for Urban Areas - heliographic - heliopause - heliosphere - helmet streamer - hemispherical power input - High Energy Proton and Alpha Detector (HEPAD) - high frequency - high latitude - high-speed stream - High Latitude Monitoring Station (HLMS) - homologous flare - HRS type antennas - Hubble Space Telescope (HST) - Hyder flare -

I

International Association of Geomagnetism and Aeronomy (IAG) - International Cometary Explorer (ICE) - International Geophysical Year (IGY) - Interplanetary Monitoring Platform (IMP) - International Magnetospheric Study (IMS) - inclination of the geomagnetic field - initial phase - integral particle flux - International Consortium of Magnetic Observatories (INTERMAGNET) - intermediate-field region - interplanetary magnetic field (IMF) - invariant magnetic latitude - inversion (meteorology) - inversion line - ion-acoustic wave - ionogram - ionosphere - ionospheric absorption - ionospheric reflection - ionospheric sounding - ionospheric storm - international standard relative sunspot number - International Sun Earth Explorer-3. (ISEE-3) - International Solar-Terrestrial Program (ISTP) - ITU Model for Indoor Attenuation - ITU Rain Attenuation Model - ITU Rain Attenuation Model for Satellites - ITU Terrain Model - International Union of Geodesy and Geophysics (IUGG) - International Ursigram and World Days Service (IUWDS) -

J

Joan-Eleanor system - Jet Propulsion Laboratory (JPL) - Johnson Space Center (JSC) -

K

K corona - K index - K-factor - Kelvin-Helmholtz instability - Kennelly-Heaviside layer - Km index - knife-edge effect - Kp index - Kitt Peak National Observatory (KPNO) -

L

latchup - long-delayed echo (LDE) - leader spot - LEO - light bridge - light curve - limb (solar physics) - limb darkening - limb flare - Line-of-sight propagation - linear energy transfer (LET) - List of European medium wave transmitters - lobe (solar physics) - Log-distance path loss model - Long delayed echo - long duration - longitudinal component - Longley–Rice model - loop prominence system (LPS) - low frequency - low probability of intercept - low-gain antenna - low-power communication device - lowest usable frequency (LUF) - lowest usable high frequency -

M

M(3000) - magnetic bay - magnetic cloud - magnetic local time - magnetic sunspot classifications - magneto-ionic double refraction - magnetogram - magnetohydrodynamics (MHD) - magnetopause - magnetopause current sheet - magnetosheath - magnetosphere - magnetotail - MAGSTORM - main phase - material scattering - Maunder minimum - maximum usable frequency (MUF) - medium frequency - Medium Energy Proton and Electron Detector (MEPED) - mesosphere - meteor burst communications - meteor scatter - micropulsation - microwave burst - microwaves - middle latitude - Mie theory - miniprop - Moreton wave - mound prominence (MDP) - Marshall Space Flight Center (MSFC) - Multipath - multipath - mush zone - MW DX -

N

Naval Astronautics Group (NAG) - National Aeronautics and Space Administration (NASA) - National Bureau of Standards (NBS) - National Center for Atmospheric Research (NCAR) - Near Vertical Incidence Skywave - National Environmental Satellite, Data, and Information Service (NESDIS) - National Environmental Satellite Service (NESS) - neutron monitor - New Horizons - National Geophysical Data Center (NGDC) - National Geophysical and Solar-Terrestrial Data Center (NGSDC) - National Institute of Standards and Technology (NIST) - National Oceanic and Atmospheric Administration (NOAA) - National Optical Astronomy Observatories (NOAO) - noise storm - non-great-circle propagation - non-line-of-sight propagation - Northern Meteorological Data System (NORMEDS) - Naval Ocean Systems Center (NOSC) - Naval Research Laboratory (NRL) - National Science Foundation (NSF) - National Solar Observatories (NSO) - National Space Science Data Center (NSSDC) -

O

Okumura Model - On-Line Data Systems (OLDS) - One Woodland Terminal Model - ordinary mode -

P

P-angle - p-spot - p.f.u. - particle flux unit - path loss - path profile - path quality analysis - penumbra - perigee - perihelion - persistence - phantom command - photosphere - photospheric network - Pioneer 10 - Pioneer 11 - Pioneer program - pitch angle - plage (solar physics) - plage corridor - plasma - plasma frequency - plasmapause - plasmasheet - plasmasphere - Point to Point Lee Model - Point-to-Point propagation model - polar cap absorption (PCA) - polar crown - polar plume - polar rain - pore (solar physics) - post-flare loops - power delay profile - preheating - PRESTO - prominence - Propagation path obstruction - proton event - proton flare - pulsation -

Q

Q index - quiescent prominence - quiet (solar physics) - quiet day curve (QDC) -

R

R-number - radar aurora - radiation belt - radiation scattering - radio blackout - radio burst - radio emission - radio frequency - radio horizon - radio propagation beacon - radio propagation model - RAIM - ray tracing (physics) - Rayleigh fading - Rayleigh–Taylor instability - reconnection - recurrence - red line - region number - relative transmission level - Remote Geophysical Observing Network (RGON) - Rician fading - right ascension - rigidity (solar physics) - ring current - riometer - Radio Solar Telescope Network (RSTN) - rudimentary (solar physics) - Regional Warning Center (RWC) -

S

S component - s.f.u. - satellite anomaly - Schumann resonance - Science Institute (ScI) - scintillation - sector boundary - Space Environment Laboratory (SEL) - selective fading - Space Environment Laboratory Solar Imaging System (SELSIS) - Space Environment Monitor (SEM) - Solar Electro-Optical Network (SEON) - Space Environment Services Center (SESC) - Space Forecast Center (SFC) - Solar Geophysical Activity Summary (SGAS) - Shadow loss - shock - short wave fade - shortwave relay station - Solar Influences Data Analysis Center (SIDC) - side lobe - sidereal - Signal-to-Interference Ratio - simultaneous flares - single event upset (SEU) - Single Vegetative Obstruction Model - skip (radio) - skip zone - sky wave - skywave - Solar Maximum Mission (SMM) - smoothed sunspot number - Synchronous Meteorological Satellite (SMS) - Software-defined radio - solar activity - solar constant - solar coordinates - solar cycle - solar flare - solar flare effect (SFE) - solar flux - solar flux unit - solar maximum - solar minimum - solar radiation storm level - solar radio emission - solar rotation rate - solar sector boundary - solar wind - solstice - Solar Observing Optical Network (SOON) - South Atlantic anomaly - Southern Hemisphere Auroral Radar Experiment - Space weather - spacecraft charging - Space Physics Analysis Network (SPAN) - spicule (solar physics) - sporadic E - Sporadic E propagation - spray (solar physics) - spread F - Spread spectrum - stratosphere - STRATWARM - subflare - substorm - sudden commencement - sudden impulse - sudden ionospheric disturbance (SID) - sunspot - sunspot classification - sunspot cycle - sunspot number - super high frequency (SHF) - supergranulation - Surface wave - surge - SWF - Solar X-ray Imager (SXI) - sympathetic flare - synodic - synoptic chart -

T

T-index - Tracking and Data Relay Satellite (TDRS) - trans-equatorial propagation (TEP) - total electron content (TEC) - Total Energy Detector (TED) - telemetry - tenflare - terrain model - thermal fade - thermosphere - Time signal - Television and Infrared Radiation Observation Satellite (TIROS) - Table Mountain Observatory (TMO) - total electron content - transition region - transverse - troposphere - tropospheric scatter - tropospheric wave - TV and FM DX - TV-FM DX - two-ribbon flare -

U

U-burst - UHF - UHF CB - ultrahigh frequency - ultraviolet - umbra - UMR - unipolar magnetic region - Universal Time - unsettled (solar physics) - upsets (solar physics) - Union Radio Scientifique Internationale (URSI) - United States Air Force (USAF) - United States Geological Survey (USGS) - United States Space Forecast Center (USSFC) - UT - UTC -

V

Van Allen radiation belts - vernal equinox - very high frequency - very low frequency - VHF - VLF - VMB4 - Voyager 1 - Voyager 2 - Voyager program -

W

wave propagation - World Data Center (WDC) - Weibull fading - Weissberger's model - White Alice Communications System - white light - white-light flare - wing (spectroscopy) - World Meteorological Organization (WMO) - Wolf number - World Warning Agency (WWA) - WWV -

X

X band - X-band - X-ray - X-ray background - X-ray burst - X-ray flare class - X-ray flare termination -

Y

yellow line - Young Model -

Z

Z component of the geomagnetic field - Zeeman effect - Zurich sunspot classification - Zurich sunspot number -

See also

External links

  • http://www.swpc.noaa.gov/info/glossary.html
  • http://ecjones.org/propag.html

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