Results 51 to 60 of about 229,198 (350)

General space-time clutter model for multi-channel airborne radar

The Journal of Engineering, 2019
Ground clutter of looking-down airborne radar is spread in Doppler because of the platform motion, and thus the interested moving targets may be masked by the ground clutter.
Li Xinzhe, Xie Wenchong, Wang Yongliang, Ma Jie   +3 more
doaj   +1 more source

Calibration of Phased-Array High-Frequency Radar on an Anchored Floating Platform

Remote Sensing, 2022
Prior studies have highlighted the importance of calibrating receiver antennas in target direction-of-arrival (DOA) estimation and surface current measurement for high-frequency (HF) radar systems.
Bin Wan, Xiongbin Wu, Xianchang Yue, Lan Zhang, Li Wang   +4 more
doaj   +1 more source

A Concept for High Performance Reflector-Based Synthetic Aperture Radar [PDF]

, 2010
The success of current spaceborne Synthetic Aperture Radar (SAR) is boosting the performance requirement of next generation systems. In order to cope with the evolution of SAR, the design of the new systems will need to meet higher requirements for ...
Patyuchenko, Anton, Huber, Sigurd, Anton Patyuchenko, Alberto Moreira, Moreira, Alberto, Younis, Marwan, Krieger, Gerhard, Sigurd Huber, Marwan Younis, Gerhard Krieger   +9 more
core   +1 more source

Additional degree of freedom in phased‐MIMO radar signal design using space‐time codes

ETRI Journal, 2021
In this paper, an additional degree of freedom in phased multi‐input multi‐output (phased‐MIMO) radar with any arbitrary desired covariance matrix is proposed using space‐time codes. By using the proposed method, any desired transmit covariance matrix in
Roholah Vahdani, Hossein Khaleghi Bizaki, Mohsen Fallah Joshaghani   +2 more
doaj   +1 more source

Simulated annealing whale radar resource scheduling algorithm based on Cauchy mutation

Xibei Gongye Daxue Xuebao, 2022
In order to improve the effectiveness of radar resource scheduling, a Cauchy mutation simulated annealing whale radar resource scheduling algorithm is proposed in this study. The algorithm integrates the time resources, computing resources and the number
HU Bin, ZHU Yahui, ZHOU Yannian
doaj   +1 more source

Using EMD-FrFT filtering to mitigate high power interference in chirp tracking radars [PDF]

, 2011
This letter presents a new signal processing subsystem for conventional monopulse tracking radars that offers an improved solution to the problem of dealing with manmade high power interference (jamming).
Soraghan, John, John J. Soraghan, Elgamel, Sherif, Sherif A. Elgamel   +3 more
core   +1 more source

Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

IET Microwaves, Antennas & Propagation, 2023
In a phased array radar, the phase quantisation error of phase shifters can lead to the beam steering error (BSE) between the predetermined and the actual directions.
Shuang Qiu, Jianlin Ye, Renli Zhang, Xiaofeng Ma, Weixing Sheng   +4 more
doaj   +1 more source

A Phased Array Antenna System of a Millimeter-wave FMCW Radar for Blind Spot Detection of Mobile Robots

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Mobile robots have been extensively used in manufacturing plants for inter-logistic transportation in recent years. This paper covers a phased array antenna design for a millimeter wave radar system to improve lidar-based navigation systems' safety and ...
Hüseyin Şerif Savcı
doaj   +1 more source

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

Advanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang, Dong Hyun Lee, Conan Weiland, Won‐Il Lee, Kim Kisslinger, Mingzhao Liu, Aswin kumar Anbalagan, Xiao Tong, Soumyajit Mandal, Nikhil Tiwale, Houk Jang, Chang‐Yong Nam   +11 more
wiley   +1 more source

The dependence of radar target detectability on array weighting function [PDF]

, 2009
Presented at the IET-Radar 2007 Conference Edinburgh 15-18 October 2007This paper describes simulation work to assess the detectability of targets by an airborne fire control radar (FCR) operating in a medium pulse repetition frequency (PRF) mode in ...
Alabaster, Clive M., Hughes, Evan J.
core