Common-mode suppression accelerometer

Data-driven CM removal

Extracts common-mode from synchronous angular accelerations without assuming physical sources, suppressing low-frequency interference in the signal domain.

Zhou, Annan · Bai, Yanzheng · Zhou, Zebing

Measurement: Journal of the International Measurement Confederation 2026

Specifications

RMSE (X-axis)

{'zh': '1e-9', 'en': '1e-9'} m/s²

Advantages

No physical assumptions

The method is entirely data-driven and requires no model of disturbance sources, enhancing generality and robustness.

Significant precision gain

Simulation results demonstrate that the RMSE reaches the order of 10⁻⁹ m/s² (X) and 10⁻¹⁰ m/s² (Y, Z), indicating effective attenuation of low-frequency disturbances.

Preserves signal integrity

While attenuating low-frequency common-mode components, the method preserves the integrity of non-gravitational signals.

Applications

• Gravity field measurement：Provides cleaner non-gravitational acceleration data directly for high-precision gravity field recovery.
• Inertial measurement units：Suppresses common-mode interference in IMUs, improving navigation and attitude determination accuracy.
• Vibration signal processing：Eliminates low-frequency structured interference in the signal domain, suitable for removing coherent noise in vibration signals.