R9100D multi-mode dual-frequency high-precision GNSS/MEMS integrated navigation receiver,launched by Shenzhen Simple Electronics Co., LTD. It integrates navigation system based on 6-DOF MEMS sensor and dual-frequency RTK satellite navigation. The RTK algorithm and integrated navigation algorithm run efficiently in on-chip processor. It is a centimetre-level integrated navigation product of 100% navigation availability， with low power consumption, small size, high precision, no need to access odometer assistance, and with urban canyons and long time tunnels.

R9100D adopts advanced MEMS inertial sensor and carrier differential (RTK) satellite navigation integrated navigation technology, making full use of the carrier phase information of satellite navigation and the relative angular motion and linear motion measurement function of inertial devices (three-axis gyro and three-axis accelerometer). The multi-dimensional extended Kalman filter technology and other specific algorithms are used to realize the 3D high-precision navigation and attitude measurement function on the tiny device.