Results 71 to 80 of about 90,052 (317)
Joint Three-dimensional Location Algorithm for Airborne Interferometric SAR System
Leida xuebao, 2013 Joint three-dimensional location algorithm aims to get the north, east and height coordinates of each pixel in several adjacent Interferometric Synthetic Aperture Radar (InSAR) scenes simultaneously.
Mao Yong-fei +2 more
doaj +1 more source
Fiber Optic Acoustic Vibration Sensors for Ultrasound Measurement in Low-Pressure CO₂ Environment
IEEE Access, 2020 The detection of acoustic signals in the Martian environment is significant to understand the issues such as the evolution of the universe, structure of matter, origin of life, and future migration of humans.
Jingchuan Zhang, Yifei Pei, Xiyuan Li
doaj +1 more source
CoRRAs autonomous systems are being developed in multiple industries it has been recognized that a phased approach is needed both for technical development and user acceptance. Partially in response, the automotive and aircraft industries have published five or six Levels of Autonomy in an attempt to broadly characterize the amount of autonomy technology ...
Daniel Baker, Sean Phillips
openaire +2 more sources
The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review
Journal of Field Robotics, EarlyView.ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton +4 more
wiley +1 more source
An application of adaptive fault-tolerant control to nano-spacecraft
, 2014 Since nano-spacecraft are small, low cost and do not undergo the same rigor of testing as conventional spacecraft, they have a greater risk of failure.
Biggs, James +5 more
core
Journal of Field Robotics, EarlyView.ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang +3 more
wiley +1 more source
Sensitive characteristics of ZnO nano gas sensor based on dynamic temperature modulation
Results in Physics, 2020 In this paper, nano ZnO gas sensing materials and sensors are designed and fabricated by hydrothermal method. Focus on the selectivity problem of metal oxide gas sensors, a novel dynamic temperature modulation test method is proposed, and six ...
Yue Wu, Nianzhi Huang, Jing Wang
doaj +1 more source
Computationally light attitude controls for resource limited nano-spacecraft
, 2011 Nano-spacecraft have emerged as practical alternatives to large conventional spacecraft for specific missions (e.g. as technology demonstrators) due to their low cost and short time to launch.
Biggs, James +4 more
core
Robustness analysis of magnetic torquer controlled spacecraft attitude dynamics [PDF]
, 2009 This paper describes a systematic approach to the robustness analysis of linear periodically time-varying (LPTV) systems. The method uses the technique known as Lifting to transform the original time-varying uncertain system into linear fractional ...
Postlethwaite, I., Kim, J., Bates, D.G.
core
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada +4 more
wiley +1 more source