## Over-the-horizon Radar |

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### Contents

Characteristics of OvertheHorizon Radar | 1 |

The Radar Equation | 9 |

Methods for Calculating the Path Loss | 27 |

Copyright | |

9 other sections not shown

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### Common terms and phrases

absorption active interference adaptive beamforming algorithm amplitude angle of arrival antenna system anti-interference approximation attenuation azimuth bandwidth beam Block diagram calculated cancelation clutter coefficient components corresponding Cosmic noise density determined distribution Doppler shift effects electron energy equation estimate false alarm filter function Gaussian geometric optics HF band inhomogeneities intensity interference level interference with unknown interval intrapulse ionosphere ionospheric ducts large number layer log-periodic antennas loss meteor trail methods minimax Moscow narrow-band interference noise nonstationary interference oblique sounding obtained operating frequency optimal optimum decision rule OTH radar output over-the-horizon radar P-vector parameters probability of false problem pulse pulse-to-pulse radar equation radiation radio waves range rapidly fluctuating signal ray optics receiver channels reflected RTW signals scattering shown in Fig signal and interference signal-to-interference ratio slowly fluctuating signal Sovietskoe Radio spatial spectral spectrum statistics threshold transformation transmitted unknown a priori vector voltages weights