Incorporating MEMS sensor technology, VN-300 GPS/INS combines 3-axis accelerometers, 3-axis gyros, 3-axis magnetometers, barometric pressure sensor, 2 GPS receivers, and microprocessor in aluminum enclosure. When in motion, unit couples position and velocity measurements from GPS receivers with measurements from inertial sensors to provide position, velocity, and attitude estimates. GPS receivers also provide True North heading measurements when sensor is stationary via GPS compassing techniques.
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