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KVH Launches New FOG/MEMS IMU

CG-5100_small.jpg
April 1, 2010

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KVH Industries, Inc., of Middletown, Rhode Island, has introduced its new CG-5100 inertial measurement unit (IMU), which combines KVH fiber optic gyros (FOGs) and microelectro-mechanical system (MEMS) accelerometers to measure roll, pitch, and yaw angular rates and accelerations.

The CG-5100 is designed for stabilization, navigation, and autonomous vehicle applications requiring precision position, velocity, and attitude sensing capabilities, dependable backup for GPS in dynamic conditions or when GPS is unavailable.

The strap-down inertial subsystem offers 6-degrees-of-freedom measurement and a roll/pitch/yaw bias of ±1 degree per hour, 1 sigma, according to the company. The acceleration accuracy for an x/y/z input range of up to ±10 g includes a bias zero offset maximum of ±50 mg, scale factor error of 4,000 pppm (1 sigma), and a frequency response of 50 Hz.

According to KVH, the CG-5100 achieves this performance by employing proprietary algorithms to a fully combined digital gyro and accelerometer output, enabling the system to characterize and correct for the effects of temperature and misalignment. It also offers the end user an easy-to-adapt output in a fully digital, user-selectable RS-232/RS-422 format.

The CG-5100 is KVH’s second commercial single-enclosure measurement and navigation solution. For applications that need both GPS and FOG-based IMU capabilities, the company offers its CNS-5000 GPS/IMU, which combines a FOG-based IMU with NovAtel’s OEMV3 precision GPS receiver technology.

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