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A Model of Gravity Vector Measurement Noise for Estimating Accelerometer Bias in Gravity Disturbance Compensation

open access: yesSensors, 2018
Compensation of gravity disturbance can improve the precision of inertial navigation, but the effect of compensation will decrease due to the accelerometer bias, and estimation of the accelerometer bias is a crucial issue in gravity disturbance ...
Junbo Tie   +5 more
doaj   +4 more sources

Compensation of Horizontal Gravity Disturbances for High Precision Inertial Navigation

open access: yesSensors, 2018
Horizontal gravity disturbances are an important factor that affects the accuracy of inertial navigation systems in long-duration ship navigation.
Junbo Tie   +5 more
doaj   +4 more sources

Gravity disturbance compensation for dual-axis rotary modulation inertial navigation system

open access: yesFrontiers in Marine Science, 2023
Gravity disturbance compensation is an important technique for improving the positioning accuracy of high-precision inertial navigation systems (INS).
Panpan Zhang   +7 more
doaj   +3 more sources

Integrated Dynamic Modeling and Ground Test Validation for Spacecraft Micro-Vibration Suppression Considering Disturbance, Isolation, and Pointing Control [PDF]

open access: yesSensors
On-orbit micro-vibration has emerged as a critical constraint impairing the imaging performance and ultra-high pointing accuracy of space optical payloads.
Hua Wang   +4 more
doaj   +2 more sources

Stochastic Entanglement of Deterministic Origami Tentacles For Robust Robotic Grasping. [PDF]

open access: yesAdv Sci (Weinh)
This study introduces an origami tentacle gripper to robustly grasp objects‐in air, underwater, and even in orbital space‐by exploiting a synergy between local, deterministic deformation programming and global, stochastic entanglements. A single origami tentacle can be designed to coil with a simple tendon pull.
Boron A   +4 more
europepmc   +2 more sources

La Soufriere Volcanic Eruptions Launched Gravity Waves Into Space [PDF]

open access: yes, 2022
Atmospheric gravity waves can be excited by explosive volcanic eruptions and may reach Earth's upper atmosphere. In this study, we report on mesoscale concentric gravity waves observed in the mesopause airglow layer following the La Soufriere volcano ...
Kahn, Ralph   +13 more
core   +1 more source

Global Ionospheric Disturbance Propagation and Vertical Ionospheric Oscillation Triggered by the 2022 Tonga Volcanic Eruption

open access: yesAtmosphere, 2022
The Tonga volcano erupted on 15 January 2022, at 04:15:45 UTC, which significantly influenced the atmosphere and space environment, at the same time, an unprecedented opportunity to monitor ionospheric anomalies is provided by its powerful eruption.
Qiaoli Kong   +7 more
doaj   +1 more source

Analysis of Gravity Disturbance Compensation for Initial Alignment of INS

open access: yesIEEE Access, 2020
To address the accuracy requirements of initial alignment of high-precision inertial navigation systems (INSs), gravity disturbance compensation for INSs based on a spherical harmonic model is investigated herein.
Shiwen Hao   +4 more
doaj   +1 more source

Formation of Australasian tektites from gravity and magnetic indicators

open access: yesScientific Reports, 2023
The parent impact crater of Australasian tektites has not been discovered so far, but a consensus has been accepted on its location in a wider area of Indochina.
Kurosh Karimi   +4 more
doaj   +1 more source

Precise Locating Control for a Polar Crane Based on Sliding Mode Active Disturbance Rejection Control and Quadratic Programming Algorithm

open access: yesMachines, 2021
A polar crane is a large-scale special lifting equipment operated in a nuclear power plant. To address the precise locating control problem of a polar crane with the center of gravity shifting, with cross-coupling, and with external disturbance, an ...
Xuyang Cao, Zhiwei Wang, Xingang Zhang
doaj   +1 more source

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