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In intelligent driving cars, inertial navigation is usually used for vehicle positioning, path planning and navigation, body posture monitoring and so on.

UAV LiDAR

The airborne LiDAR system is an active earth observation system that obtains the three-dimensional spatial information of the ground object by emitting the laser pulse and receiving the signal reflected back from the ground. A typical airborne lidar system consists of a positioning system (GNSS), an inertial measurement unit (IMU), a laser scanner (Laser Scanner), a digital camera (Digital Camera), and a central control unit (Center Control Unit).

Construction machinery

In order to improve the operation accuracy and efficiency of construction machinery, and in order to make the operators timely understand the posture of the equipment, to avoid the safety accidents caused by excessive tilt and other bad posture, most construction machinery began to carry out intelligent transformation through the installation of IMU.

AGV

AGV (Automated Guided Vehicle), the automatic guide vehicle, is a transportation device that can be automatically driven along a preset path. It is one of the key equipment in the modern logistics system and industrial automation production.

Robotics

During the movement of the robot, its posture (including pitch, roll and yaw) will constantly change. The accelerometer in the IMU measures the linear acceleration of the robot in three dimensions, and the gyroscope is used to measure the angular velocity. Taking the humanoid robot as an example, when the robot walks or performs actions, the accelerometer of the foot can sense the acceleration changes during the foot landing and lifting. At the same time, the gyroscope located in each part of the robots body can detect the rotation angular speed of each part of the body.

Satellite communication

Mobile communication (Satellite Communication on the Move) refers to the system that realizes satellite communication on mobile carriers (such as vehicles, ships, aircraft, etc.). Since the mobile carrier is in a state of constant motion, the communication antenna can be aligned with the satellite in real time to ensure the stability of the communication link. Inertial navigation plays a key role in this process. With the rapid development of the low-orbit satellite communication industry, the market demand for satellite communication terminals is gradually increasing.

Drones

During the flight process, its position and posture (including roll, pitch and yaw) are the important control factors, and this information must be measured accurately. Where GNSS is used to measure position, and inertial navigation is used to measure attitude information. Although GNSS is a conventional method of UAV positioning, in some special cases, such as when the GNSS signal is blocked or disturbed, inertial navigation can play an important auxiliary role and calculate the position and speed of the UAV by the integration of acceleration and angular speed. The inertial navigation system is mainly composed of an accelerometer and a gyroscope, which can measure the acceleration of the UAV in three axial directions (usually x, y, z axis), and the gyroscope is used to measure the angular rate of the UAV. By integrating the measurement data and solving the attitude information of the UAV can be obtained.

Surveying and mapping

The large-scale use of RTK technology in the field of surveying and mapping has effectively improved the measurement accuracy and efficiency, but in the shielding environment such as tall buildings and trees or electromagnetic interference such as radio stations and signal towers, the traditional RTK technology will be seriously affected and the measurement accuracy will be greatly reduced. At the same time, during the RTK measurement, the bubble pair ensures the vertical to the middle rod, otherwise the measured data will have a large deviation. The application of inertial navigation system to RTK technology can ensure that it can be accurately measured in the corners of rooms, under trees, and even in sewers, and the impact of the environment is greatly reduced. At the same time, there is no longer a need to strictly match, which can be tilted measurement, which can greatly reduce the operation difficulty of surveying and mapping, effectively help surveying personnel to improve surveying and mapping efficiency, and make surveying and mapping work become simple and efficient.

Precision agriculture and autonomous driving applications

The combined navigation system based on inertial navigation and satellite navigation has been widely used in the field of agricultural machinery automatic driving in China. Through the high-precision combined navigation system, the real-time position, driving direction and three-dimensional attitude of agricultural machinery can be accurately measured, and the operation path planning can be realized according to the operation requirements to accurately drive or control agricultural machinery, and improve the operation efficiency and quality.