Results 21 to 30 of about 34,472 (250)

A Method of Constructing Measurement Matrix for Compressed Sensing by Chebyshev Chaotic Sequence

Entropy, 2020
In this paper, the problem of constructing the measurement matrix in compressed sensing is addressed. In compressed sensing, constructing a measurement matrix of good performance and easy hardware implementation is of interest. It has been recently shown
Renjie Yi, Chen Cui, Yingjie Miao, Biao Wu   +3 more
doaj   +1 more source

Efficient Waveform Design Method for Target Estimation Under the Detection and Peak-to-Average Power Ratio Constraints in Cognitive Radar

IEEE Access, 2019
This paper addresses the waveform design problem to estimate the target impulse response (TIR) of the temporally correlated extended target in a cognitive radar, subject to a detection constraint and a peak-to-average power ratio constraint.
Tianduo Hao, Chen Cui, Yang Gong
doaj   +1 more source

Shipborne Multi-Function Radar Working Mode Recognition Based on DP-ATCN

Remote Sensing, 2023
There has been increased interest in recognizing the dynamic and flexible changes in shipborne multi-function radar (MFR) working modes. The working modes determine the distribution of pulse descriptor words (PDWs).
Tian Tian, Qianrong Zhang, Zhizhong Zhang, Feng Niu, Xinyi Guo, Feng Zhou   +5 more
doaj   +1 more source

Compact UWB MIMO Vivaldi Antenna With Dual Band-Notched Characteristics

IEEE Access, 2019
A novel ultra-wideband (UWB) multiple-input multiple-output (MIMO) Vivaldi antenna with dual band-notched characteristics is presented and fabricated. The antenna is comprised of an improved ground plane and two microstrip feeding lines with a compact ...
Zhenya Li, Chengyou Yin, Xiaosong Zhu
doaj   +1 more source

Changes in lower extremity muscle function after 56 days of bed rest [PDF]

, 2011
Preservation of muscle function, known to decline in microgravity and simulation (bed rest), is important for successful spaceflight missions. Hence, there is great interest in developing interventions to prevent musclefunction loss.
I. Michaelis, D. L. Belavý, Michaelis, Ingo, Belavy, Daniel, Buehring, Björn, Gast, Ulf, U. Gast, Felsenberg, Dieter, D. Felsenberg, J. Rittweger, Rittwger, Jörn, B. Buehring   +11 more
core   +1 more source

A Multidimensional Matrix Completion Method for 2-D DOA Estimation with L-Shaped Array

Sensors
This paper focuses on two-dimensional (2-D) direction-of-arrival (DOA) estimation for an L-shaped array. While recent studies have explored sparse methods for this problem, most exploit only the cross-correlation matrix, neglecting self-correlation ...
Haoyue Zhang, Junpeng Shi, Zhihui Li, Shuyun Shi   +3 more
doaj   +1 more source

Lymphocyte Membrane‐ and 12p1‐Dual‐Functionalized Nanoparticles for Free HIV‐1 Trapping and Precise siRNA Delivery into HIV‐1‐Infected Cells

Advanced Science, 2023
Despite the success of small interfering RNA (siRNA) in clinical settings and its potential value in human immunodeficiency virus (HIV) therapy, the rapid clearance and absence of precise delivery to target cells still hinder the therapeutic effect of ...
Jinbang Zhang, Jingwan Han, Hui Li, Zhengyang Li, Pengfei Zou, Jiaxin Li, Te Zhao, Junwei Che, Yang Yang, Meiyan Yang, Yuli Wang, Wei Gong, Zhiping Li, Lin Li, Chunsheng Gao, Haihua Xiao   +15 more
doaj   +1 more source

A Robust SMC-PHD Filter for Multi-Target Tracking with Unknown Heavy-Tailed Measurement Noise

Sensors, 2021
In multi-target tracking, the sequential Monte Carlo probability hypothesis density (SMC-PHD) filter is a practical algorithm. Influenced by outliers under unknown heavy-tailed measurement noise, the SMC-PHD filter suffers severe performance degradation.
Yang Gong, Chen Cui
doaj   +1 more source

A Power Spectrum Maps Estimation Algorithm Based on Generative Adversarial Networks for Underlay Cognitive Radio Networks

Sensors, 2020
In the underlay cognitive radio networks, the main challenge in detecting the idle radio resources is to estimate the power spectrum maps (PSMs), where the radio propagation characteristics are hard to obtain.
Xu Han, Lei Xue, Fucai Shao, Ying Xu
doaj   +1 more source

Dynamic countermeasure knowledge for intrusion response systems

, 2020
Significant advancements in Intrusion Detection Systems has led to improved alerts. However, Intrusion Response Systems which aim to automatically respond to these alerts, is a research area which is not yet advanced enough to benefit from full ...
Hughes, Kieran, Kieran Hughes, Sezer, Sakir, Sakir Sezer, Kieran McLaughlin, McLaughlin, Kieran; id_orcid   +5 more
core   +1 more source