METHOD FOR RADIO DIRECTION FINDING AND DIRECTION FINDER FOR IMPLEMENTATION THEREOF Russian patent published in 2009 - IPC G01S3/02 

FIELD: physics; radio.

SUBSTANCE: invention may be used in radio frequency source fixing systems. Technical result is achieved as follows. Radio signal is received by five antennas, which form equispaced antenna array; complex cross-spectra of paired signals received by adjacent antennas are measured; signal 2D angular spectrum is generated; phase shifts of signals received by two adjacent antennas are determined. The latter is used to estimate azimuth and elevation angle of the radio signal source. Amplitude difference spectra of signals received by paired adjacent and non-adjacent antennas are measured. Together with phase shift-based azimuth estimation results, they are used to determine the radio signal source azimuth. The said device for the method implementation comprises five antennas interconnected in a specific way, radio-receiving unit, data storage unit, cross-spectra calculating device, cross-spectrum arguments calculating device (5-channel), as well as azimuth phase calculator, elevation angle calculator, calculation parameters sensor, clock-pulse generator, 2D angular spectrum calculator, single-valued phase shift calculator, amplitude difference spectrum calculator, azimuth amplitude calculator and azimuth calculator.

EFFECT: improved accuracy of direction finding and decresed time required for direction finding.

2 cl, 36 dwg