High precision airborne gravity measurement system

Customer Background

A Chinese geophysical research institute conducting a national mineral resources survey project required a lightweight gravimetry system for UAV platforms to perform geological structure inversion in remote mountainous regions.

Challenges

• Airborne gravimetry requires distinguishing gravity anomalies from carrier motion acceleration, demanding ultra-high accelerometer resolution (better than 10 μg).
• UAV platforms impose strict weight (≤70g), power (≤90mW), and size (Ø25.4×30mm) constraints.
• Operating environment includes vibration and temperature variations, requiring excellent vibration immunity and full-temperature stability.

GyroSens Solution

• GyroSens provided the GSACC112Q quartz flexure accelerometer, meeting all airborne gravimetry requirements:
• Bias stability ≤10 μg, resolution better than 1 μg, threshold <1 μg, capable of resolving subtle gravity anomaly signals.
• Bias temperature sensitivity 10 μg/°C with built-in temperature sensor for full-range compensation.
• Range ±20g, suitable for UAV maneuvering acceleration profiles.
• Random vibration resistance 15g (20~2000Hz), shock resistance 100g, adapted to UAV takeoff/landing and flight vibration environments.

Results

The system successfully completed multiple airborne gravimetry missions, with gravity anomaly data matching ground truth measurements at >95% correlation, providing high-precision data for mineral exploration.

Recommended Product

GSACC112Q Quartz Flexible Accelerometer

Call to Action

Contact our exploration engineering team for airborne gravimetry accelerometer selection guidance.