A two-state Kalman estimator for atomic gravimetry
Abstrak
Abstract We present a two-state Kalman estimator of gravity acceleration and evaluate its performance by numerical simulations and post-measurement demonstration with real-world atomic gravimetry. We show that the estimator-enhanced gravimetry significantly improves upon both short-term sensitivity and long-term stability. The estimates of gravity acceleration demonstrate a $$\tau ^{1/2}$$ τ 1 / 2 feature well under white phase noise in the short term, and continue to improve as $$\tau ^{-1/2}$$ τ - 1 / 2 or improve faster as $$\tau ^{-1}$$ τ - 1 in the long term. This work validates the estimation of gravity acceleration as a key topic for future atomic gravimetry. Graphical abstract The performance of atomic gravimetry is limited by noises and other systematic or geophysical effects. By building a Kaman estimator rooted in the physics of atom interferometry, we realize significant improvements in both short-term sensitivity and long-term stability. This demonstration of estimator-enhanced gravimetry would be of great interest for static measurements of gravity, such as metrology or geophysics (Color online)
Topik & Kata Kunci
Penulis (1)
B. Jiang
Akses Cepat
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Cek di sumber asli →- Tahun Terbit
- 2023
- Bahasa
- en
- Total Sitasi
- 3×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1140/epjd/s10053-024-00888-6
- Akses
- Open Access ✓