Angular velocity detection method adopting two-way full reciprocity coupling optoelectronic oscillator

Abstract

The invention discloses an angular velocity detection method adopting a two-way full reciprocity coupling optoelectronic oscillator. The method is achieved on an optical carrier microwave gyro. The optical carrier microwave gyro is a two-way resonance optical carrier microwave angular velocity measurement device sharing one optical fiber loop. The core of the method is characterized in that by sensing the Sagnac effect through a two-way optical carrier microwave resonant cavity, the optical carrier microwave resonant cavity achieves a two-way full reciprocity optical fiber optical path by adopting the coupling optoelectronic oscillator, and non-reciprocity errors of the resonant cavity is effectively eliminated. The angular velocity detection method has the advantages of being high in accuracy, each to achieve and low in cost.

Description

technical field [0001] The invention belongs to the technical field of high-precision gyroscopes, and relates to an angular velocity detection technology, in particular to an angular velocity detection method using a bidirectional full reciprocal coupling photoelectric oscillator. Background technique [0002] Inertial technology is one of the core technologies of national defense weapons and equipment systems, and it plays a very important role in improving the rapid maneuverability of troops, implementing precise strikes, and improving self-survivability. In the field of inertial navigation, gyroscopes are usually used to measure the inertial angular velocity. The high-precision gyroscope directly affects the navigation accuracy of the inertial navigation system. Therefore, the accuracy index of the gyroscope is an important manifestation of the national military technology level. [0003] At present, the practical high-precision gyroscopes mainly include electrostatic gy...

AI Technical Summary

Problems solved by technology

Electrostatic gyroscope is the gyroscope with the highest precision so far, but its volume is large, the dimensional accuracy of core components is very high, the processing is difficult, and the cost is also high

The three-float gyroscope is a mechanical gyroscope, and its drift stability is second only to the electrostatic gyroscope, but it also requires high processing accuracy, strict assembly, and precise temperature control, so the cost is also high

However, due to the limitations of the system's reciprocity error and drift error, the accuracy of laser gyroscopes and fiber optic gyroscopes is difficult to improve. They belong to the field of low- and medium-precision gyroscopes and cannot meet the needs of high-precision inertial navigation.

Images