DSP-3400 FIBER OPTIC GYRO (FOG) (NON-ITAR)
A Robust, Reliable Gyro in a Durable, Shielded Package
The EMCORE DSP-3400 offers the reliability and robust design found in all members of the DSP-3000 series, but adds the benefits of a true digital RS-422 interface and a 1000 Hz synchronous output in a durable, shielded package. As a result, the DSP-3400, with its robust, modular design, is a powerful option for use in applications requiring FOG output to be transmitted over a longer distance.
Highlights
- Mature all-fiber optical circuit ensures exceptionally low noise (ARW)
- Proprietary E•Core polarization-maintaining fiber
- Robust, modular design housed in a package roughly the same size as a deck of playing cards
Single-axis Fiber Optic Gyroscopes (FOG) incorporating Digital Signal Processing (DSP) electronics are particularly advantageous in applications where the gyroscope output must be transmitted over long distances. These applications include aerospace platforms, marine navigation systems, remotely operated vehicles, industrial stabilization systems, and distributed sensing architectures where the sensor and control unit are physically separated. In such environments, signal integrity, stability, and resistance to environmental disturbances are critical.
In traditional analog FOG designs, the output signal is typically an analog voltage proportional to rotation rate. When transmitted over long cables, analog signals are vulnerable to noise pickup, electromagnetic interference (EMI), signal attenuation, and ground loop effects. Additionally, analog circuitry is sensitive to temperature variations, causing drift, bias instability, and scale factor changes. These effects become more pronounced over extended distances, degrading measurement accuracy and system reliability.
By contrast, FOG systems with DSP electronics convert the photodetector signal into digital data close to the sensing element using high-resolution analog-to-digital converters. All signal processing functions—such as demodulation, filtering, phase detection, and closed-loop feedback control—are performed digitally. The resulting output is provided in a digital communication format (e.g., RS-422, CAN, Ethernet, or fiber-optic links), which is far more robust for long-distance transmission. Digital signals are less susceptible to noise, can include error detection and correction protocols, and maintain signal integrity over extended cable lengths.
Furthermore, DSP-based designs implement real-time temperature compensation and bias correction algorithms, virtually eliminating temperature-sensitive drift and rotation errors. This ensures that the transmitted data remains accurate regardless of environmental conditions.
As a result, single-axis FOGs with DSP electronics provide stable, precise, and noise-immune rotation measurements, making them ideal for systems requiring reliable long-distance signal transmission and high-performance navigation accuracy.
- Single-axis fog, modular design for 1, 2, or 3-axis configurations
- Available in three variants – DSP-3000, DSP-3100, and DSP-3400 – for outstanding versatility
- 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
DSP Technology
EMCORE’s DSP electronics improve FOG performance in critical areas such as scale factor and bias vs. temperature, scale factor linearity, and maximum input rate. EMCORE’s exclusive DSP design overcomes the limitations of analog signal processing, eliminating temperature-sensitive drift and rotation errors.
Feature Options
Two Versatile Variants
- If you need a compact FOG with a powerful high-speed RS-422 interface with 1000 Hz asynchronous output, consider the DSP-3100 FOG.
- If you require a compact FOG with a choice of analog, digital, and digital RS-232 outputs, consider the DSP-3000.
AUTOMATED INVENTORY TRACKING
ANTENNA/RADAR/OPTICS STABILIZATION
GUN/TURRET STABILIZATION
IMU, GPS/INS INTEGRATION
AHRS INTEGRATION
