Ring Laser Gyroscope

In recent years, with the rapid development of photovoltaic technology, collection of optical, mechanical and electrical "trinity" of new laser gyro has been developed rapidly, and it is widely used in the area of armed forces day. Ring laser gyro is also known as the vast sea of "positioning artifact".

Ring laser gyro can provide all kinds of craft and precision-guided weapons with real-time information such as heading, speed, height, and greatly enhance the accuracy of precision guided weapon; Providing mobile launch ballistic missiles, cruise missiles with azimuth benchmark, make them fast positioning, accurate, from hitting their targets. In addition, you can for ships, submarines and torpedoes heading, speed and position, such as benchmark data, they do not depend on any external information, real-time navigation can independently.

In the civil field, Ring laser gyro IMU and Ring laser gyro INS as the spacecraft attitude and orbit control system an important part of the inertial guidance system can be used to launch vehicle, or mounted on a telescope to provide real-time angle coordinate information, also can use super Ring laser gyro observed seismic wave information, solid tidal effects on the ground and measuring gravitational waves, etc.

Ring laser gyros are also used to measure the deformation of moving objects. By installing ring laser gyro modules at different positions of the ship, the relevant information of the carrier is collected, and the output signals of these modules are processed by Kalman filter to estimate the dynamic and static shape variables of the carrier. In the process of calculating the shape variables of moving objects, the influence of gyro drift makes the mathematical model of the algorithm more accurate.

Due to the high accuracy and excellent characteristics of the laser gyro system, in addition to the use of the laser gyro as a device, the laser gyro system is also used as a standard navigation instrument or direction compass to calibrate or analyze the accuracy of other navigation systems. For example, a new Walker system that includes only accelerometers and magnetic heading sensors uses laser gyro instruments as the standard reference system. The accelerometer is fixed on the walker's foot with the magnetic sensor to feel the posture, vibration and direction of the foot, so as to calculate the walker's stride size and walking direction more accurately. At the same time, the laser gyro integrated navigation system is used as the reference standard of the system to evaluate and test the system. Laser gyro system is used as the reference standard system of other navigation systems, calibrating the accuracy and effect of other systems, which can be regarded as a prominent application of high-precision laser gyro navigation system different from other navigation systems.

The ring laser gyro is a new type of gyro based on Sagnac effect. Compared with the traditional mechanical gyro, it has many outstanding advantages: it has higher stability and reliability, larger dynamic range and faster start-up. As an important sensor to provide information for strapdown system, the accuracy of RLG will directly affect the navigation accuracy of strapdown inertial navigation system. Although the use of high precision laser gyro can achieve satisfactory results, but its cost is also high. Therefore, it is of great significance to study the random error of RLG output and deal with it according to the actual situation.

Predictably, with the increasingly perfecting of Ring laser gyro technology, it also will be more broad, the application scope of will in the future war and enormous influence our daily life.

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