Results 31 to 40 of about 1,865 (202)

IMU and GNSS Postprocessing for High-Resolution Strapdown Airborne Gravimetry

Engineering Proceedings, 2023
Strapdown airborne gravimeters based on a navigation-grade inertial measurement unit (IMU) are highly sensitive to perturbations during aircraft flight, especially in the case of flights in draped mode (at a constant altitude above the terrain) or drone ...
Vadim Vyazmin, Andrey Golovan
doaj   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Classical and Atomic Gravimetry

Remote Sensing
Gravity measurements have important applications in geophysics, resource exploration, geodesy, and inertial navigation. The range of classical gravimetry includes laser interferometer (LI)-based absolute gravimeters, spring relative gravimeters ...
Jie Fang, Wenzhang Wang, Yang Zhou, Jinting Li, Danfang Zhang, Biao Tang, Jiaqi Zhong, Jiangong Hu, Feng Zhou, Xi Chen, Jin Wang, Mingsheng Zhan   +11 more
doaj   +1 more source

Experimental Investigations on Airborne Gravimetry Based on Compressed Sensing

Sensors, 2014
Gravity surveys are an important research topic in geophysics and geodynamics. This paper investigates a method for high accuracy large scale gravity anomaly data reconstruction.
Yapeng Yang, Meiping Wu, Jinling Wang, Kaidong Zhang, Juliang Cao, Shaokun Cai   +5 more
doaj   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Application of curvatures to airborne gravity gradients [PDF]

ASEG Extended Abstracts, 2012
The application of equipotential surface curvatures to airborne gravity gradient data is presented. The differential curvature, as measured by the FALCON? airborne gravity gradiometer system, the mean curvature, and the direction of maximum curvature of the equipotential surface should improve the understanding and geological interpretation of gravity ...
Carlos Cevallos, Mark Dransfield, Jacqueline Hope, Heather Carey   +3 more
openaire   +1 more source

Asymmetry in Skipping Enhances Viability Against Control Input Noise

Advanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

Absolute geopotential height system for Ethiopia [PDF]

, 2010
This study used airborne gravity data, the 2008 Earth Gravity Model (EGM08) and Shuttle Radar Topographic Mission (SRTM) digital elevation data in a ‘Remove-Compute-Restore’ process to determine absolute vertical reference system for Ethiopia.
Bedada, Tullu Besha
core  

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Determining the new height of Mount Qomolangma based on the International Height Reference System

Geo-spatial Information Science
To achieve the goal that China and Nepal jointly announce the new height of Mount Qomolangma (MQ), the campaign of Qomolangma Height Survey (QHS) was carried out from 2019 to 2020.
Yamin Dang, Tao Jiang, Chunxi Guo, Bin Chen, Chuanyin Zhang, Qiang Yang, Zhengtao Wang   +6 more
doaj   +1 more source