METHOD AND APPARATUS TO REMOVE PHASE INSTABILITIES EFFECT IN RADIO DIRECTION FINDER RECEIVING CHANNELS

摘要

FIELD: radio direction finding methods, that use antennas spacing and measurements of phase shift of the antennas received signals; method and apparatus are used to measure coordinates in high-speed objects information systems and in navigational systems of airfields for aircraft landing. SUBSTANCE: method provides for detection of coming to receiving antenna members inputs bearing signal, formation from point with known coordinates of emission in direction of receiving antenna members with frequency equal to bearing signal frequency. Then calibrating phase measurements are carried out, their results are recorded. then phase measurements of bearing signal are carried out and their results are processed with consideration of calibrating measurements results. Apparatus has transceiver, even number of linear groups subarrays of receiving antenna members and transmitting antenna members, signal processor, two passive power dividers, section of transmitting line, unit of controlled fading, remote antenna, power summer, controlled oscillator. Receiving antenna members have filter based on passing cylindrical resonator. There is structure scheme of apparatus. EFFECT: increased accuracy of high-speed objects coordinates determination.