Based on the above background, ERDI LASER LTD developed a fiber optic gyroscopic rotation modulation inertial navigation system using single axis rotation modulation technology.
Posts by ERDI
Airborne Fiber Optic Inertial Navigation
The strapdown inertial navigation system is characterized by autonomy, concealment and complete acquisition of carrier motion information. It has become an indispensable navigation tool in military fields such as missiles and combat vehicles, industrial fields such as mining and exploration, as well as civilian fields such as unmanned vehicles and Marine cruise ships.
Introduction of Fiber Optic Gyroscope
Fiber optic gyroscope is a sensitive element based on optical fiber coils. The light emitted from the laser diode propagates in two directions along the optical fiber. The difference of light propagation path determines the angular displacement of the sensitive element.
MEMS inertial measurement unit
ERDI LASER LTD’s MEMS inertial measurement unit adopts the same batch of low-cost MEMS chips, uses multi-sensor fusion algorithm to build MEMS array navigation system information processing system, and corrects the installation errors and sensor errors in real time during task execution by online calibration technology.
Doppler Laser Anemometry
The wind-measuring lidar emits laser, which points to the detected area with the azimuth set by the system. Due to the movement of aerosol particles under the action of wind field, Doppler shift occurs in the atmospheric echo signal, and radial wind speed is measured through its Doppler shift.
Fiber optic gyro space application technology
Interference Fiber Optic Gyroscopes (IFOGs) are angular velocity inertial sensitive devices based on the Sagnac effect, which have become the main choice for spacecraft inertial navigation and attitude orbit control with their advantages of all-solid-state, irradiation resistance, low energy consumption, high dynamics, and long lifetime.
Power supply design for erbium glass laser rangefinder
The overall scheme and detailed circuit design were completed by comparing three pulsed constant-current drive schemes and establishing the technical path of energy storage network with switching circuit for the Erbium glass laser rangefinder. The experimental results show that the drive power supply can output pulse current with pulse width from 2.3 ms to 2.5 ms, size from 12 A to 14 A, and repetition frequency from 10 Hz, with good current stability and no overshoot, and has the advantages of high reliability, small size, light weight and full protection function, which can meet the system requirements.
Military laser rangefinder applications
Military laser rangefinders have the advantages of high measurement accuracy, fast measurement speed, large measurement range and high resolving power.
Military laser rangefinder composition/working principle
The laser rangefinder is used mainly to measure and calculate the results of the laser transceiver between the emitting and receiving targets, to obtain the distance to the target through the calculation results, and to emit the beam for distance detection based on the accurate determination of the position.
The application and development of military laser rangefinder light source
The application of military laser rangefinder light source has very important practical significance. This paper is based on the analysis of the characteristics of the application of laser rangefinder light source, based on further analysis of the future development prospects, aiming to play a certain reference significance for the actual military innovation to achieve.