DSP-3000 Fiber Optic Gyro

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Ideal for Stabilization Applications
One of KVH’s most widely fielded gyros; the DSP-3000 fiber optic gyroscope offers a combination of exceptional low noise, and high resistance to shock and vibration. With options of digital, analog and digital RS-232 outputs, the DSP-3000 is extremely versatile, and an ideal choice for weapon platform stabilization, precision pointing, antenna and optical sensor stabilization, as well as integration into such higher systems as inertial measurement units (IMUs), GNSS/inertial navigation systems, and Attitude, Heading and Reference Systems (AHRS).

Proven Affordable and Reliable
The DSP-3000 package is slightly larger than a deck of playing cards and weighs less than 0.27 kg. This modular gyroscope delivers superior precision and reliable performance at low cost.

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Brochures & Datasheets

Document File Info
DATASHEET - DSP-3000 Fiber Optic Gyro PDF file 897 KB / 2 pg
DATASHEET - DSP-3000 光ファイバージャイロ - (Japanese) PDF file 909 KB / 2 pg



Strong magnetic fields have the ability to cause apparent drift in the gyro bias. This is due to the Faraday effect on the laser light in the sensing coil resulting in non-reciprocal light paths. While this effect can be observed in gyros designed for precision inertial navigation systems (drift rates of less than 1 degree per hour), and can be mitigated by the use of mu-metal shielding, there have been no reported problems with KVH FOGs. If your application results in mounting a FOG near a very strong magnetic field (>50 gauss), a practical test to determine sensitivity is suggested.

Yes, the DSP-3000 FOG makes integrated GPS/INS, AHRS, and inertial measurement units a reality.
The DSP-3000 family is a commercial-grade gyro.  It was not designed specifically or adapted to military use. Further, no government funds were used in its development. Many of our designs are made robust with MIL STD specifications in mind but the DSP-3000 has not been tested or qualified to meet military standards.

The DSP-4000 is an example of a gyro with the same performance characteristics as the DSP-3000. In this case the gyro has been repackaged specifically for military end use and as such falls under Category XII (e) State Department Classification. It also has undergone military qualification testing.

A rate gyro does not output accumulated angle. Instead, it outputs rate of change of angle. In most KVH FOGs, the users can change the output format as desired; rate integrated angle, or incremental angle.

The geometrical birefringence created by the elliptical core is the key to the E-Core fiber's outstanding polarization-maintaining abilities. Because of its design, it is able to maintain its polarization and low-loss characteristics when exposed to physical stresses and temperature-induced changes far better than PM fiber created using stress-induced birefringence. It is the E-Core fiber's stability that makes it an excellent choice for pigtailing optical components.
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How to choose the right FOG... DSP-4000
  • Commercial Off the Shelf (COTS) product
  • Single-axis FOG, modular design for 1-, 2-, or 3-axis configurations
  • 1° per hour performance
  • Powerful high-speed RS-422 interface with 100 Hz asynchronous output 
  • Industry-standard 26-pin connector
  • Exceptional bias stability and scale factor linearity – minimal temperature and power-up errors
  • Excellent reliability: >55,000 hours MTBF, Ground Mobile
  • Robust for a wide variety of applications including platform stabilization, antenna/radar/optics stabilization, IMU, GPS/INS, and AHRS integration

This product is covered by one or more patents.

Featured Highlights

  • If you need a high-performance, dual-axis militarized fiber optic gyro for superior stabilization, consider the DSP-4000 FOG.
  • If you need a compact FOG with a powerful high-speed RS-422 interface with 100 Hz asynchronous output, consider the commercial DSP-3100 FOG.
  • If you require a true RS-422 interface and a 1000 Hz synchronous output in a durable, shielded package, take a look at the commercial DSP-3400 FOG.

Exclusive Technology

  • DSP Technology
    KVH's Digital Signal Processing (DSP) electronics improve fiber optic gyro performance in such critical areas as scale factor and bias versus temperature, scale factor linearity, turn-on to turn-on repeatability, and maximum input rate. The breakthrough DSP design is covered by multiple patents and overcomes the limitations of analog signal processing, virtually eliminating temperature-sensitive drift and rotation errors.*

* This product is covered by one or more patents, including U.S. Patent #6,429,939, "DSP Signal Processing for Open Loop Fiber Optic Sensors."

Watch the Video

DSP 3000: Choosing the Right FOG to Meet Your Needs


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