HF Communications Systems and TechnologyCommunications engineers, ionospheric scientists, engineers and scientists in DoD HF projects, and DoD managers will use this source to gain a working understanding of the basic theory involved in HF radiowave propagation and uses of HF technology today. |
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Contents
Historical Review Current Roles Future Trends1 | 1 |
HF System Impact | 32 |
5 | 41 |
Copyright | |
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absorption antenna associated auroral auroral zone bandwidth Boulder CCIR CCIR Report coefficients component corresponds coverage critical frequency curves developed distance earth effects electron concentration electron density elevation angle Equation equatorward F region F2 layer factors fading field strength Figure flux foF2 forecasting function geomagnetic field geomagnetic storm Geophysics ground constants ground wave groundwave Hagn height HF band HF channel HF communication HF propagation high latitude IONCAP Ionized Media iono ionogram ionospheric models loss magnetic activity magnetic field magnetosphere maximum median methods midlatitude modes multipath noise NVIS oblique observed oval parameters path plasma polarization prediction Propagation in Ionized radiation Radio Propagation Radio Science radiowave range ray tracing raytracing real-time refractive satellite signal skywave solar activity solar maximum solar wind Solar-Terrestrial sounder specified spheric sporadic sporadic E sunspot number term tion transmitter values variability variation vertical wideband