Results 11 to 20 of about 101,355 (268)

A Synchronization Approach Based on Bidirectional Correlation Search for Aperiodic Chaotic Direct Sequence Spread Spectrum Signals

IEEE Access, 2020
The chaotic direct sequence spread spectrum (CD3S) is one of the distinguished techniques providing physical layer secrecy and low probability of intercept (LPI) in wireless communication.
Guogang Yuan, Zili Chen, Xijun Gao, Jiangyan He, Hongxia Jia   +4 more
doaj   +1 more source

Equipment Mission Safety Evaluation Method Based on Function-Structure

IEEE Access, 2021
Safety is the eternal theme of aviation activities. With the rapid development of military technology and equipment construction, the new equipment requires safer and more reliable technology and management guarantees.
Yujin Chen, Jihui Xu, Lijuan Kan, Jiahui Shi, Wenjie Tian   +4 more
doaj   +1 more source

Guidance Law for a Surveillance UAV Swarm Tracking a High Capability Malicious UAV [PDF]

, 2021
Significant research is currently focused on the issue of malicious UAVs or drones disrupting critical services (e.g. civilian airport operations). One mitigation is to track or pursue a malicious UAV back to its point of origin (and possibly its owner ...
Nawin Raj, Brown, Jason, Raj, Nawin, Jason Brown, https://orcid.org/   +4 more
core   +1 more source

Coordinated motion of UGVs and a UAV [PDF]

, 2013
Coordination of autonomous mobile robots has received significant attention during the last two decades. Coordinated motion of heterogenous robot groups are more appealing due to the fact that unique advantages of different robots might be combined to ...
Soner Ulun, Ünel, Mustafa, Ulun, Soner, Mustafa Unel   +3 more
core   +1 more source

Unmanned Aerial Vehicle (UAV) for monitoring soil erosion in Morocco [PDF]

, 2012
This article presents an environmental remote sensing application using a UAV that is specifically aimed at reducing the data gap between field scale and satellite scale in soil erosion monitoring in Morocco. A fixed-wing aircraft type Sirius I (MAVinci,
D'Oleire-Oltmanns, Sebastian, Irene Marzolff, Johannes B. Ries, Marzolff, Irene, Ries, Johannes B., Klaus Daniel Peter, Peter, Klaus Daniel, Sebastian D\u27Oleire-Oltmanns   +7 more
core   +1 more source

Two-Level Hierarchical-Interaction-Based Group Formation Control for MAV/UAVs

Aerospace, 2022
Cooperative group formation control of manned/unmanned aircraft vehicles (MAV/UAVs) using a hierarchical framework can be more efficient and flexible than centralized control strategies.
Huan Wang, Shuguang Liu, Maolong Lv, Boyang Zhang   +3 more
doaj   +1 more source

Numerical Simulation of Continuous Tilting Transition of Tiltrotor Aircraft

Hangkong gongcheng jinzhan, 2021
The aerodynamic configuration of the tiltrotor aircraft is constantly changed during the tilting transition process, and the aerodynamic characteristics is of strongly nonlinear characteristics.Aiming at the complex states of continuous tilting ...
WU Weiwei, MA Cunwang, ZHANG Lian, SUN Kaijun   +3 more
doaj   +1 more source

LanderVT/SMB-from-UAV: SMB from UAV [PDF]

, 2021
Matlab code to model the surface mass balance from UAV observations and ice thickness ...
Lander Van Tricht
core   +1 more source

Acquisition of Time and Doppler Shift in WFRFT Encrypted Chaotic Direct Sequence Spread Spectrum System

IEEE Access, 2022
Weighted fractional Fourier transform encrypted chaotic direct sequence spread spectrum (WFRFT-CD3S) signal is aperiodic and complex Gaussian distributed.
Jiangyan He, Guogang Yuan, Zili Chen, Xijun Gao   +3 more
doaj   +1 more source

Control of an experimental mini quad-rotor UAV [PDF]

, 2008
The design and the initial realization of control on an experimental in-door unmanned autonomous quadrotor helicopter is presented. This is a hierarchical embedded modelbased control scheme that is built upon the concept of backstepping, and is ...
Lantos, Béla, Alexandros Soumelidis, Bela Lantos, Regula, Gergely, Gergely Regula, Peter Gaspar, Gáspár, Péter, Soumelidis, Alexandros   +7 more
core   +1 more source