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Updated: Jan 9, 2026

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Análisis del efecto Dick para gravímetros dinámicos basados en IA

Wen-Zhang Wang^1,2, Xi Chen^1,3, Jin-Ting Li^1,2

¹Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China.

Sensors (Basel, Switzerland)

|December 11, 2025

Abstract:

Atom interferometer (AI)-based dynamic gravimeters enable high-precision absolute gravity measurements, which are crucial for applications in geophysics, navigation, resource exploration, and metrology. Understanding their underlying mechanisms and minimizing measurement noise is essential for enhancing performance. This work investigates gravity-measurement noise in AI-based systems induced by the dead time of the classical accelerometer. Using actual dynamic gravity-measurement data, we demonstrate that a dead time of 0.12 s introduces significant gravity-measurement noise, reaching 8 mGal. To elucidate the mechanism of this noise, we derive a frequency-domain formula, identifying high-frequency aliasing as its source. Analysis of the derived expressions indicates that reducing the dead-time duration and suppressing the acceleration's high-frequency noise are effective strategies for mitigating this noise. This work provides significant insights into noise analysis and the future design of AI-based dynamic gravimeters.

Palabras clave:

efecto Dick acelerómetro interferómetro atómico medición de gravedad dinámica gravímetro análisis de ruido de gravedad

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