High Accuracy 0.3° Fiber Optic Gyro North Finder with Fast Start-Up

The NF701 Fiber Optic Gyroscope North Finder is a compact, high-precision north-seeking system that determines true north autonomously without GNSS. It measures the Earth's rotation rate through a fiber optic gyroscope and computes azimuth and attitude information for mobile platforms.

Featuring north-seeking accuracy of ≤0.3° (1σ), alignment time under 3 minutes, and RS-422 interface, it integrates a FOG, accelerometer, rotation servo, and embedded controller. The system operates reliably across -40°C to +70°C and is suitable for surveying, drilling, and defense applications requiring rapid, magnetic-independent north reference.

• North seeking time: ≤ 3 min
• North seeking accuracy (1σ): ≤ 0.3° (NF701A); ≤ 0.5° (NF701B)
• Horizontal accuracy: ≤ 0.05° (1σ)
• Circumference: ≤ 0.5° (1σ)
• Weight: ≤ 2 kg
• Power supply: DC 12V ~ 24V
• Power consumption: 15 W (peak)
• Interface: RS422
• Working mode: automatic self-check after power on, controlled by upper computer, sends results after completion

• Working temperature: -40°C ~ +70°C
• Storage temperature: -55°C ~ +85°C
• Humidity: relative humidity less than 95%
• Appearance: Metal surface free of rust, coating without blistering or peeling

• MTBF ≥ 1000 hours
• MTTR ≤30min