HIGH PRECISION INS MODULE USING DIGITAL MEMS SENSOR AND OPERATING METHOD THEREOF

摘要

PURPOSE: An INS(Inertial Navigation System) module using a digital MEMS(Micro Electro Mechanical System) sensor and a method for driving the same are provided to improve the accuracy of angular information and acceleration information required for a mobile satellite communication terminal and to miniaturize the mobile satellite communication terminal for a small MEMS sensor. CONSTITUTION: An INS module using a digital MEMS sensor comprises a plurality of digital MEMS acceleration angular sensors(110), a plurality of digital MEMS angular sensor(120), an acceleration calculation unit(140), an angular velocity calculation unit(150), and a CUP chip(160). The MEMS acceleration sensor measures the acceleration of a mobile satellite communication terminal and the MEMS angular sensor measures the angular velocity of the mobile satellite communication terminal. The acceleration calculation unit obtains an average value of the acceleration, thereby calculating average acceleration. The angular velocity calculation unit obtains an average value of the angular velocity, thereby calculating average angular velocity. The CUP chip determines the calculated average acceleration and angular velocity as acceleration information and angular information for positioning. [Reference numerals] (110) MEMS acceleration sensor; (120) MEMS angular sensor; (130) Compass sensor; (140) Acceleration calculation unit; (150) Angular velocity calculation unit; (160) CPU chip; (AA) Acceleration, Angular velocity, Speed, 3D posture, Each heading position; (BB) GPS or DGPS data