Fiber optic gyroscope north finder

Customer Background

A Beijing-based surveying instrument company developing north-seeking gyrocompasses for mine surveying and tunnel guidance needed fast, accurate true north determination without GPS.

Challenges

• North-seeking accuracy required better than 0.5° (1σ).
• North-seeking needed completion within 1 minute of startup; no extended warm-up permitted.
• Instrument must be lightweight and low-power for field portability and battery operation.

GyroSens Solution

• GyroSens provided the GSGYR112F single-axis fiber optic gyroscope, perfectly matched to north-seeker requirements:
• Bias stability <0.1°/h (high-precision model), random walk <0.01°/√h, ensuring high north-seeking accuracy .
• Instant 1-second startup reaches nominal specifications with no preheating, dramatically reducing north-seeking time.
• All-solid-state Sagnac effect design with no moving parts ensures long life and high reliability.
• Compact (60×60×30mm) and lightweight (<160g) with low power consumption, ideal for portable instruments.

Results

The north-seeker achieved <0.3° accuracy across -20°C～+50°C ambient temperature, with north-seeking time under 45 seconds. The product has been deployed in multiple mine surveying and subway tunnel guidance projects.

Recommended Product

GSGYR112F Single-Axis Fiber Optic Gyroscope (H/HH High-Precision Model)

Call to Action

Contact our surveying instrument team for north-seeker gyroscope selection guidance.