A Method of Detecting Angular Velocity Using Single-loop Two-way Bidirectional Resonant Light-borne Microwave

Abstract

The invention discloses a method for detecting the angular velocity through adopting one-loop two-way bidirectional resonant optical microwaves. The method can be realized through a one-loop two-way bidirectional resonant optical microwave gyroscope, the one-loop two-way bidirectional resonant optical microwave gyroscope includes two two-way bidirectional resonant optical microwave angular velocity measuring devices sharing one fiber loop to form two optical microwave resonance loops, and the two-way angular velocity measuring devices alternatively work. The alternative work mode of the two-way angular velocity measuring devices is adopted in the invention to guarantee the measuring continuity in order to solve a measuring discontinuity problem appearing in the locking frequency switching process of one-way bidirectional resonant optical microwave angular velocity measuring devices. The method disclosed in the invention guarantees the angular velocity measuring continuity and increases the measuring precision.

Description

technical field [0001] The invention relates to a detection technology, in particular to a detection method for detecting angular velocity by using bidirectional resonant light-borne microwaves. Background technique [0002] In the field of inertial navigation, gyroscopes are usually used to measure the inertial angular velocity. Gyroscopes are widely used in the guidance and control of space vehicles, aircraft, missiles, submarines, ships, etc., and play an important role in precision measurement in military, industrial, and scientific fields. There are three main types of common high-precision gyroscopes: mechanical gyroscopes, laser gyroscopes, and fiber optic gyroscopes. Both laser gyroscopes and fiber optic gyroscopes are optical gyroscopes. Although they are not as stable as mechanical gyroscopes, they have the characteristics of compact structure and high sensitivity. They currently occupy most of the market share of high-precision gyroscopes. [0003] The principle...

AI Technical Summary

Problems solved by technology

In the middle, there is the problem that the electrical circuits are not exactly the same, which introduces non-reciprocity errors and reduces the accuracy of the optical microwave gyroscope.

Although the non-reciprocity error of the optical-borne microwave gyroscope can be eliminated by alternately locking the oscillation frequency of one of the two loops on a clock reference source with high frequency stability, but when the frequency-locked loop is switched, the switching from the It will take a certain amount of time from the beginning until the frequency is re-locked. Although this period of time can be shortened by some technical means, it cannot be completely eliminated.

During this period of time, due to the instability of the resonant frequency, it is impossible to obtain high-precision angular velocity, which will lead to a blank area in the measurement

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