PROCESS OF DIRECTION FINDING OF RADIO SIGNALS AND MULTICHANNEL DIRECTION FINDER Russian patent published in 2000 - IPC

FIELD: radio engineering, simultaneous direction finding of several radio radiation sources. SUBSTANCE: process includes reception of signals by antenna array made of N elements assembled in P groups of pairs. Determining convolution of complex-conjugate amplitudes of signal for P pairs of signals one obtains their complex amplitudes and uses them to conduct P two- dimensional Fourier transforms, obtains P components of two-dimensional angular spectrum, isolates maximum module of component of two-dimensional angular spectrum that is employed to evaluate azimuth and inclination angle of wave-front of radio signal. Multichannel direction finder includes antenna array, switch, receiver, analog-to-digital converter, Fourier transform unit, unit storing components of spectrum, convolution computer connected in series . EFFECT: enhanced direction finding accuracy. 7 cl, 3 dwg