Small jitter frequency stabilization method of four-frequency laser gyro

A four-frequency laser gyro and frequency stabilization technology, which is applied to Sagnac effect gyroscopes and other directions, can solve the problems of reducing the performance of four-frequency laser gyro
CN101975574AInactive Publication Date: 2011-02-16NAT UNIV OF DEFENSE TECH
1 Cites 21 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2011-02-16
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

When a four-frequency laser gyro adopts light intensity difference for frequency stabilization, accuracy thereof is easily influenced by parameter variation in light combination, photoelectric conversion and amplification processes. The invention discloses a novel frequency stabilization mode, small jitter modulation is carried out on path length of the four-frequency laser gyro, and then frequency stabilization is carried out according to the modulation condition of four-frequency laser gyro intracavity travelling wave mode amplitude, so that the four-frequency laser gyro operates under the condition that homonymous travelling wave mode beat-wave amplitude is maximum. The invention can solve problems which are caused when light intensity difference is adopted for frequency stabilization, and performance of four-frequency laser gyro is improved while the four-frequency laser gyro operates in unique uninterrupted state.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a four-frequency laser gyro, in particular to a frequency stabilization method for a four-frequency laser gyro. Background technique

[0002] The laser gyroscope has the advantages of large dynamic range, no acceleration effect, simple structure, and small size. It is an ideal component for inertial systems, especially strapdown inertial systems, and has been widely used in military and civilian fields. The principle of the laser gyroscope is the Sagnac effect, and at least one pair of counterpropagating light waves run in its optical resonant cavity. When it rotates around the sensitive axis relative to the inertial space, the frequency of the opposite traveling waves splits to form a beat frequency proportional to the rotation rate, so the rotation information of the laser gyroscope relative to the inertial space can be obtained by measuring the beat frequency.

[0003] Due to the energy coupling between opposing traveling w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More