DEVICE FOR MEASURING THE FLUCTUATION OF PHASE INCURSION AND ARRIVAL ANGLES IN MICROWAVES Russian patent published in 2016 - IPC G01R29/00 G01S13/00 

FIELD: electricity; measurement technology.

SUBSTANCE: invention relates to technology for electrical measurements and can be used to study the propagation of microwaves on open atmospheric routes. Invention was created to increase the accuracy of measuring the fluctuation of phase incursion and arrival angles of microwaves when investigating their propagation from one point of a measurement route to another. Comparison of the proposed device with devices and prototype already available shows that the proposed device detects new technical properties, which include: achieving phase synchronisation of the reference generators on both ends of the measurement route and increased interference immunity of the reference signal, which allows greater accuracy in measuring the phase incursion of microwaves; as well as intensifying the analysed microwave signal in the retransmission unit, which makes it possible to increase the length of the atmospheric measurement route, thereby improving the accuracy of measurement of microwave arrival angles, as well as optimising of radio channel frequency properties of the due to the selection of different frequencies, F₁ and F_2, for the reference and synchronizing signals. Independence of frequencies F₁ and F₂ gives the user freedom when selecting the frequency of the reference signal. Measuring device consists of two symmetrical measurement channels and one reference channel. A specialized feedback circuit is incorporated into the reference channel of the retransmission unit, which reemits the microwave measuring signal. Feedback circuit automatically monitors and adjusts the initial phase of the control signal using a microwave phase changer. Additional advantage of this meter consists in the fact that the retransmission unit intensifies the reemitted measuring signal, which enables an increase in length of the measurement route.

EFFECT: increasing the length of the measurement route and the base of the interferometer increases the accuracy of measuring the fluctuation of phase incursion and arrival angles in microwaves, due to reduction of relative measurement errors in phase differences of the analysed microwave signals.

1 cl