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In GNSS (GPS/Beidou) signal-blind areas such as urban underground tunnels, high-rise building clusters and underground parking lots, fiber optic gyroscopes feature ultra-high bias stability to support long-duration dead reckoning. They can independently maintain centimeter-level vehicle positioning without relying on external signals within a short period.
In GNSS (GPS/Beidou) signal-blind areas such as urban underground tunnels, high-rise building clusters and underground parking lots, fiber optic gyroscopes feature ultra-high bias stability to support long-duration dead reckoning. They can independently maintain centimeter-level vehicle positioning without relying on external signals within a short period.
IMU deliver powerful north-seeking capability, enabling accurate locking of true geographic north within 2 minutes whether the vehicle starts statically or dynamically. During driving, it captures tiny heading bias as small as 0.01 degrees with millisecond-level response, serving as the core control reference for precise lane changing and straight-line cruising of autonomous vehicles.
When visual sensors including cameras and LiDAR fail due to heavy rain, heavy snow or dense fog, IMU, as fully passive sensors independent of external environments and signal emission, can output stable and reliable motion data, acting as the core safety redundancy guarantee for autonomous driving systems.
The application of Inertial Navigation System (INS) in Unmanned Aerial Vehicles (UAVs) is mainly focused on professional-grade special operations featuring medium-to-large size, high value and strong environmental adaptability.
Applied to long-distance power inspection, pipeline patrol and forest fire monitoring, these UAVs can fly hundreds of kilometers per trip. When satellite signals are blocked or interfered in mountains and woodlands, fiber-optic gyro based high-precision INS takes over navigation, enabling accurate positioning and safe return without satellite support for tens of minutes.
Intense vibration easily triggers vibration rectification errors and navigation faults in MEMS gyroscopes. With all-solid-state structure and no moving parts, INS possess outstanding vibration resistance to maintain stable flight under harsh airflow conditions for large-sized UAVs and plateau & marine unmanned helicopters.
