Whether you travel by commercial airliner, business plane or new unmanned car, inertial navigation system (INS) plays an irreplaceable role in your journey from point a to point B. Modern INS has many characteristics and advantages such as accuracy, reliability and economy for many emerging applications and markets.
A typical ins includes an inertial measurement unit (IMU) and a central processing unit (CPU), such as a navigation computer on an aircraft. The IMU includes a gyroscope that senses rotation and an accelerometer that measures speed changes. Ring laser gyroscope (RLG) and micro electro mechanical system (MEMS) gyroscope are very common gyroscopes.ER-MG2-50/100 has a bias instability of 0.01-0.02°/hr and an angular random walk of 0.0025-0.005°/√hr, which is suitable for high-precision INS applications. It is also widely used in north finding, pointing, initial alignment design/gyroscope tools, mining/drilling equipment, weapons/UAV launch systems, satellite antennas, target tracking systems and other fields.
Based on the information output by IMU, it is possible to calculate how the object moves in three-dimensional space and its moving direction and speed. Ins usually fuses the data of the global satellite navigation system (GNSS) receiver with the data of IMU to provide the host computer with information about the absolute position (latitude, longitude and altitude) and attitude (roll, pitch and heading) of the platform. The host computer on the platform (such as the driverless car) can use this information to complete the driving task.
The combination of IMU and GNSS technology can effectively improve the accuracy of modern navigation system. For example, GNSS data can compensate the drift of IMU data due to the accumulation of small errors, thereby improving the navigation accuracy.
It is worth noting that ins does not require GNSS or any other external reference to calculate the position or direction of an object. This is particularly important when the GNSS signal is unavailable, shielded, or interrupted, for example, when an INS equipped vehicle travels through a tunnel.
INS is one of the most revolutionary achievements in the history of navigation, which makes us far away from the bitter days when pilots used to rely on stars or magnetic compasses and gimbal gyroscopes to fly. Magnetic compasses and gimbal gyroscopes have serious limitations in navigation near the poles. The emergence of INS solutions has provided aircrew with very good situational awareness and achieved a great breakthrough.
Inertial navigation system has made continuous progress in the past few decades, making ins solutions smaller and lower in cost, and widely used in various emerging markets that need independent operation.
The performance of INS has been fully proved in a series of aviation applications, and now it has entered the industrial market. For example, innovative enterprises are applying INS based technologies to driverless vehicles, manufacturing, robotics, agriculture, transportation, industrial equipment, ocean, mobile mapping, oil and gas, mining and other fields.
Ericco’s engineers forge ahead and innovate constantly, striving to extend our unique expertise in inertial sensing and INS technology to more fields. At present, ericco’s low cost INS is in hot sale. If you want to obtain more technical data and quotations, please feel free to contact us.