Results 1 to 10 of about 842,020 (274)

Time-Varying Kelvin Wake Model and Microwave Velocity Observation [PDF]

open access: yesSensors, 2020
In the synthetic aperture radar (SAR) imaging of ship-induced wakes, it is difficult to obtain the Doppler velocity of a Kelvin wake due to the lack of time-varying wake models and suitable radar equipment.
Jie Niu, Xingdong Liang, Xin Zhang
doaj   +3 more sources

Attention-Augmented LSTM Feed-Forward Compensation for Lever-Arm-Induced Velocity Errors in Transfer Alignment [PDF]

open access: yesBiomimetics
In a mother–child underwater bio-inspired robotic system, the equivalent lever arm between the master and slave inertial navigation systems (INSs) varies with launcher attitude changes and structural flexure.
Shuang Pan   +4 more
doaj   +2 more sources

Casson nanoliquid film flow over an unsteady moving surface with time-varying stretching velocity

open access: yesScientific Reports, 2023
Present study explains about unsteady Casson nanoliquid film flow over a surface moving with velocity $$U_w=\lambda x/t$$ U w = λ x / t . The governing momentum equation is reduced to ODE by using corresponding similarity transformation, which is then ...
G. P. Vanitha   +4 more
doaj   +3 more sources

THE OUTPUT EFFECT OF STOPPING INFLATION WHEN VELOCITY IS TIME VARYING [PDF]

open access: yesRomanian Economic and Business Review, 2009
The technological changes in electronic channels, such as on-line access, will have an important impact on tourism, including marketing, consumer protection, information, education and employment.
Daniela Firoiu
core   +1 more source

A time-varying distributed unit hydrograph method considering soil moisture [PDF]

open access: yesHydrology and Earth System Sciences, 2022
The distributed unit hydrograph (DUH) method has been widely used for flow routing in a watershed because it adequately characterizes the underlying surface characteristics and varying rainfall intensity.
B. Yi   +14 more
doaj   +1 more source

Optimal Connected Cruise Control Design with Time‐Varying Leader Velocity and Delays [PDF]

open access: yesJournal of Sensors, 2021
With the development of intelligent transportation system (ITS), owing to its flexible connectivity structures and communication network topologies, connected cruise control (CCC), increasing the situation awareness of the autonomous vehicle without redesigning the other vehicles, is an advanced cruise control technology attracted extensive attention ...
Lihan Liu   +6 more
openaire   +1 more source

Terminal Impact Time Control Cooperative Guidance Law for UAVs under Time-Varying Velocity

open access: yesDrones, 2021
Aiming at the problem that multiple Unmanned Aerial Vehicles (UAVs) attack the stationary target cooperatively under time-varying velocity, the cooperative guidance law with finite time convergence on two-dimensional plan and the three-dimensional ...
Zhanyuan Jiang   +3 more
doaj   +1 more source

Impact Time Control Cooperative Guidance Law Design Based on Modified Proportional Navigation

open access: yesAerospace, 2021
The paper proposes a two-dimensional impact time control cooperative guidance law under constant velocity and a three-dimensional impact time control cooperative guidance law under time-varying velocity, which can both improve the penetration ability and
Zhanyuan Jiang   +3 more
doaj   +1 more source

Multi-Constrained Geometric Guidance Law with a Data-Driven Method

open access: yesDrones, 2023
A data-driven geometric guidance method is proposed for the multi-constrained guidance problem of variable-velocity unmanned aerial vehicles (UAVs). Firstly, a two-phase flight trajectory based on a log-aesthetic space curve (LASC) is designed.
Xinghui Yan   +4 more
doaj   +1 more source

Three-Dimensional Impact Time Control Guidance Considering Field-of-View Constraint and Velocity Variation

open access: yesAerospace, 2022
The problem of three-dimensional impact time control guidance considering field-of-view constraints and time-varying velocity is investigated in this study.
Shuai Ma   +3 more
doaj   +1 more source

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