Results 51 to 60 of about 31,347 (302)

Small Target Detection in Sea Clutter Background Based on Tsallis Entropy of Doppler Spectrum

Leida xuebao, 2019
According to the different concentration levels of Doppler spectrum between sea clutter and target, small target in sea clutter background can be detected using Shannon entropy.
CHEN Shichao, LUO Feng, HU Chong, NIE Xueya   +3 more
doaj   +1 more source

Основные характеристики морского клатера, влияющие на обнаружение малоразмерных малоподвижных целей морскими РЛС [PDF]

, 2013
В роботі здійснюється пошук математичної моделі морського клатера, придатної для створення на її основі алгоритму виявлення малорозмірних малорухомих цілей морськими РЛС.
Mrachkovskyi, O. D., Turko, S. I., Мрачковский, О. Д., Мрачковський, О. Д., Турко, С. И., Турко, С. І.   +5 more
core  

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

A Semi-Empirical Model Of Sea Clutter Based On Zero Memory Nonlinearity

IEEE Access, 2019
Based on the computer simulation technology of zero memory nonlinearity (ZMNL), this paper combines with the backscattering features of sea clutter and conducts simulation for four typical backscattering coefficient empirical models of sea clutter ...
Gengkun Wu, Jiancong Fan, Fuxin Zhang, Faming Lu   +3 more
doaj   +1 more source

Методы обнаружения малоразмерных малоподвижных целей на фоне интенсивного морского клатера [PDF]

, 2013
В роботі здійснюється пошук методів виявлення малорозмірних малорухомих цілей морськими РЛС. В результаті аналізу джерел обирається три перспективні групи методів – адаптивні методи, основані на представленні амплітуди клатера сферично інваріантним ...
Mrachkovsky, O., Pravda, V., Turko, S., Мрачковский, О.Д., Мрачковський, О.Д., Правда, В.И., Правда, В.І., Турко, С.И., Турко, С.І.   +8 more
core  

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

Advanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello, Tian Lan, Salaheldin Hassan, Maximilian Leutschafft, Erdem Ekinci, Sophie F. Armanini, Mirko Kovac, Basaran Bahadir Kocer   +7 more
wiley   +1 more source

A Novel Method for Sea-Land Clutter Separation Using Regularized Randomized and Kernel Ridge Neural Networks

Sensors, 2020
Classification of clutter, especially in the context of shore based radars, plays a crucial role in several applications. However, the task of distinguishing and classifying the sea clutter from land clutter has been historically performed using clutter ...
Le Zhang, Jeyan Thiyagalingam, Anke Xue, Shuwen Xu   +3 more
doaj   +1 more source

mRMR-Tri-ConcaveHull Detector for Floating Small Targets in Sea Clutter

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
For the feature-based detector of small targets in sea clutter, on the one hand, the three-dimensional convex hull-based detector deviates from the distribution of sea clutter vectors in the feature space and only combines the information of low ...
Yanling Shi, Yuefeng Hu
doaj   +1 more source

Marine Wireless Big Data: Efficient Transmission, Related Applications, and Challenges

, 2017
The vast volume of marine wireless sampling data and its continuously explosive growth herald the coming of the era of marine wireless big data. Two challenges imposed by these data are how to fast, reliably, and sustainably deliver them in extremely ...
Jiang, Tao, Li, Wei, Li, Yuzhou, Zhang, Yu   +3 more
core   +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