AMPLITUDE-BASED METHOD FOR RADIO DIRECTION-FINDING AND RADIO DIRECTION-FINDER FOR IMPLEMENTATION THEREOF

摘要

FIELD: radio engineering, communication.;SUBSTANCE: method includes receiving a radio signal with M antennae which are identical and directional and form an equidistant ring antenna array, wherein the number M of the antennae used is selected using the formula M=4l+2, where l=1, 2, 3, … - positive integers not equal to zero. The antennae are also made with an aperture angle on the -3 dB level which is not less than the angle between axial lines of adjacent antennae of the antenna array. The amplitude U_m of signals is measured and the azimuth $\stackrel{⌢}{\theta }\mathop{\mathrm{image}}$ of the radio signal source is estimated. The radio direction-finder has M antennae, a radio receiving unit, an azimuth computer and a clock pulse generator. The azimuth $\stackrel{⌢}{\theta }\mathop{\mathrm{image}}$ computer is configured to calculate a function of the type $\stackrel{⌢}{\theta }=arctg\frac{{\displaystyle \sum _{m=1}^M{U}_m\sin {\alpha }_m}}{{\displaystyle \sum _{m=1}^M{U}_m\cos {\alpha }_m}},\mathop{\mathrm{image}}$ where U_m is the amplitude of the signal received by the m-th antenna; α_m is the angle between the axial line of the m-th antenna and the axial line of the antenna array; m=1, 2, …, M.;EFFECT: high accuracy of direction-finding and simple design of the radio direction-finder.;2 cl, 22 dwg, 2 tbl