Inertial Navigation System with GNSS

The IF2700 fiber optic inertial navigation system is a small fiber optic combination inertial navigation system composed of a three-axis integrated fiber optic inertial IMU and satellite navigation system. It is used to measure the position, velocity, and attitude of the carrier in three directions, while outputting the angular velocity and acceleration of the three axes. Fiber optic inertial navigation includes a three-axis integrated fiber optic gyroscope and a three-axis integrated MEMS accelerometer. The accelerometer is sensitive to and measures the three-axis acceleration signal of the carrier, while the gyroscope is sensitive to and measures the three-axis angular velocity signal of the carrier. After compensation and calculation, the position, velocity, and attitude of the carrier are obtained; At the same time, Kalman filtering is used to effectively integrate INS and GNSS information, obtaining optimal estimates of position, velocity, and attitude, and improving the reliability and stability of fiber optic inertial navigation.

This product has built-in three-axis integrated high-precision fiber optic gyroscope, three-axis high-precision quartz flexible accelerometer and mobile surveying-level multi-mode multi-frequency GNSS receiver supporting autonomous Beidou function. Through advanced intelligent combined navigation algorithm and Kalman filter, it is optimized for GNSS occlusion and multipath interference, and can achieve high-precision heading, attitude, speed and position measurement of moving carriers. This inertial navigation system also has multiple sensor interfaces such as GNSS/odometer/DVL/barometric altimeter, which can well meet the long-term, high-precision and high-reliability navigation application requirements in complex environments such as urban canyons, and can be used for navigation and control of various unmanned systems. Product features include: fast and accurate determination of initial heading and attitude, support for real-time heading and attitude output, built-in GPS and Beidou dual-mode receiver, support for dynamic fast alignment, INS/GNSS combination integrated design, support for IE post-processing, enhanced Kalman filter algorithm, and resistance to electromagnetic interference and vibration. It can be used in vehicle-mounted, airborne, ship navigation, stability control and other fields.

This product is equipped with a high-precision closed-loop fiber optic gyroscope with a full temperature of 0.001 °/h and a 10ug high-precision quartz accelerometer. It uses multi-sensor data fusion technology to combine inertial measurement with GNSS, enabling long-term high-precision integrated navigation.  The product also has post-processing function, which can be used to improve the heading, attitude, and position accuracy of the product through post-processing software.

IF3500 is a self-developed fiber optic inertial navigation system with small size and high accuracy, which can achieve self north finding at 0.1°. The system consists of a fiber optic gyroscope with zero bias stability of 0.015°/h, a high-precision quartz accelerometer, and a full system multi frequency satellite module supporting Beidou function. This product can independently search for north navigation and also supports single and dual antenna combinations. Equipped with excellent navigation fusion algorithms, optimized for satellite occlusion, multipath interference, and other situations.