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KVH Introduces Fiber-Optic Gyro IMUs for Demanding Applications

September 19, 2014  - By
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KVH_1775_IMU-W KVH Industries, Inc.

Photo: KVH Industries, Inc.

KVH Industries, Inc., has introduced the 1725 Inertial Measurement Unit (IMU) and the 1775 IMU, advanced sensors designed to be integrated into the most demanding stabilization, pointing, and navigation applications. These two new products complement KVH’s successful 1750 IMU and create a complete range of choices for advanced six-degrees-of-freedom (DOF) sensors with enhanced performance. All three products utilize the E•Core ThinFiber technology of KVH’s DSP-1750 fiber-optic gyro (FOG).

“With these three products, system designers and integrators now have a high-performance solution for every application — ranging from manned and unmanned commercial and defense platforms, optical equipment stabilization systems, and pipeline inspection equipment, to autonomous vehicle control and navigation,” said Jay Napoli, KVH’s vice president of FOG/OEM sales. “This line satisfies the performance, size, and price parameters for IMUs in a way that no competitor can match due to KVH’s control over the design and manufacturing process, from creating the fiber to integrating all of the IMU components into the final design. Maintaining complete control of this process, combined with our proprietary technologies, allows KVH to offer a winning combination of innovative solutions, superior quality, and affordable options for nearly every stabilization or guidance application.”

The 1725 IMU features a flexible user interface, with user programmable data output rates from 1 to 1000 Hz. It delivers excellent FOG performance and stability at a price comparable to competitive MEMS-based IMUs. The 1725 IMU is designed for all platforms and navigation or stabilization systems where low cost, high-performance, and high bandwidth are critical for success.

The 1775 IMU is a premium sensor designed to deliver the highest level of performance to meet the demands of platforms requiring superior performance in the most challenging environments. Providing ease of integration for designers of high-level inertial navigation, guidance, or stabilization systems, the 1775 IMU offers a flexible interface with user-programmable data output rates from 1 to 5000 Hz. It includes three axes of magnetometers for automatic gyro bias compensation even in the presence of strong magnetic fields. The 1775 IMU is designed for sophisticated systems and applications where very high bandwidth, low latency, and extreme stability are critical.

Like KVH’s 1750 IMU, introduced in 2012, the 1725 IMU and the 1775 IMU incorporate three axes of KVH’s DSP-1750 FOG, a tiny high-performance FOG integrated with three axes of advanced accelerometer technology. All three IMUs provide excellent shock, vibration, and thermal performance, as well as a compact form factor, KVH said.

KVH controls the entire production process, from creating its own specially designed polarization-maintaining optical fiber to packaging its gyros together in advanced systems for inertial measurement, inertial navigation, and attitude heading reference. As a result, KVH’s open-loop fiber optic gyros offer outstanding accuracy and excellent durability at a lower cost than competing systems, the company said.

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