DSP-3000 FIBER OPTIC GYRO (FOG) (NON-ITAR) IMPROVED SPECIFICATION
Superior Precision and Reliable Performance
The EMCORE DSP-3000 series is the workhorse of our single-axis FOG series, and offers field-proven performance in a wide range of applications. Its compact and robust design, coupled with a choice of analog, digital, and digital RS-232 outputs, makes the DSP-3000 series the most versatile fiber optic gyro available and an ideal solution for guidance and stabilization, low-cost IMUs, integrated GPS/INS, and AHRS.
Cameras mounted on aircraft require special stabilization to create clear images or motion pictures, surveillance, and other applications. The EMCORE DSP-3000 series is an essential part of many of these systems. When clarity meets critical, depend on the EMCORE DSP-3000 series single axis FOG to provide clear, clean imagery.
| PARAMETERS | DIGITAL | ANALOG |
|---|---|---|
| Input Rate (max) | ±375°/sec | ±100°/sec |
| Bias Instability (25°C) | ≤1°/hr, 1σ | ≤3°/hr, 1σ |
| Bias Offset (25°C) | ±5°/hr | ±100°/hr |
| Scale Factor Non-linearity (max rate, 25°C) | ≤500 ppm, 1σ | ≤500 ppm, 1σ |
| Scale Factor vs. Temperature (≤1°C/min) Taken at +/- 20°/sec | ≤250 ppm, 1σ | ≤500 ppm, 1σ |
| Angle Random Walk (25°C) | ≤0.067°/√hr (≤4°/hr/√Hz) | ≤0.1°/√hr (≤6°/hr/√Hz) |
| Bandwidth (-3 dB) | ≥440 Hz | 200 Hz ±10% |
| Data Rate | 100 Hz (Asynchronous) 1000 Hz (Synchronous) | ±2 VDC differential; 3 dB BW of 200 Hz; 45° phase shift at 100 Hz |
By integrating DSP electronics, the optical signal from the photodetector is rapidly converted into digital form using high-resolution analog-to-digital converters. All subsequent processing—including demodulation, filtering, phase detection, and closed-loop control—is performed numerically. Digital algorithms are inherently stable and repeatable, largely immune to environmental influences that affect analog components. Temperature-induced variations can be measured and compensated in real time using embedded correction models and calibration tables stored in memory.
Moreover, DSP enables sophisticated signal conditioning techniques such as digital phase-locked loops, adaptive filtering, and bias estimation algorithms. These techniques enhance signal-to-noise ratio, suppress rotation-induced nonlinearities, and maintain accurate scale factor performance across wide temperature ranges. Software-based compensation also allows continuous self-calibration, reducing long-term drift.
As a result, single-axis FOG systems with DSP electronics achieve superior bias stability, reduced temperature sensitivity, and highly accurate rotation measurement, making them ideal for aerospace, defense, and precision navigation applications where reliability and long-term stability are essential.
- Single-axis FOG, modular design for 1, 2, or 3-axis configurations
- 1˚ per hour performance
- Exceptional bias stability and scale factor linearity – minimal temperature and power-up errors
- Excellent reliability: >55,000 hours MTBF, Ground Mobile
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 is covered by multiple patents* and overcomes the limitations of analog signal processing, 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.”
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 true RS-422 interface and a 1000 Hz synchronous output in a durable, shielded package, take a look at the DSP-3400.
Antenna/radar/optics stabilization
Gun/turret stabilization
IMU, GPS/INS integration
AHRS integration
