A5001853963- Advanced SAR Imaging Techniques
- Radar Systems and Signal Processing
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Circadian rhythm and melatonin
- Genetics, Aging, and Longevity in Model Organisms
- Indoor and Outdoor Localization Technologies
- Antenna Design and Optimization
- Photoreceptor and optogenetics research
- CCD and CMOS Imaging Sensors
- Image and Signal Denoising Methods
- Direction-of-Arrival Estimation Techniques
- Microwave Imaging and Scattering Analysis
- Spectroscopy Techniques in Biomedical and Chemical Research
- Underwater Vehicles and Communication Systems
- Image and Object Detection Techniques
- Advanced Electrical Measurement Techniques
- Robotics and Sensor-Based Localization
- Advanced Data Compression Techniques
- Image Processing Techniques and Applications
- Structural Health Monitoring Techniques
- Statistical Methods and Bayesian Inference
- Neural Networks Stability and Synchronization
- Manufacturing Process and Optimization
- Cell Image Analysis Techniques
- Cognitive Abilities and Testing
Beijing Normal University
2024-2025
Beijing Institute of Technology
2017-2022
Ningbo University
2020-2021
The Ohio State University
2012-2019
Beijing Satellite Navigation Center
2018
University of Oklahoma
2002
In this paper, we address the received-signal-strength (RSS) based source localization problem in mixed line-of-sight/non-line-of-sight (LOS/NLOS) environments, where model parameters are unknown. To accommodate additional path losses incurred by NLOS signal propagations, introduce a random variable to outdoor RSS measurement represent loss. Based on modified model, propose robust method for case of unknown parameters. Specifically, balancing parameter and express loss term as sum an error...
Neural network architecture determines its functional output. However, the detailed mechanisms are not well characterized. In this study, we focused on neural architectures of male and hermaphrodite C. elegans association with sexually dimorphic behaviors. We applied graph theory computational neuroscience methods to systematically discern features these two networks. Our findings revealed that a small percentage sexual-specific neurons exerted dominance throughout entire net-work,...
Neural network architecture determines its functional output. However, the detailed mechanisms are not well characterized. In this study, we focused on neural architectures of male and hermaphrodite C. elegans association with sexually dimorphic behaviors. We applied graph theory computational neuroscience methods to systematically discern features these two networks. Our findings revealed that a small percentage sexual-specific neurons exerted dominance throughout entire net-work,...
Pulse compression, usually achieved using a matched filter, is extensively applied in radar/sonar systems. This process improves the signal-to-noise ratio (SNR) of received signal without increasing peak transmitted power. However, it often desirable to accept slight penalty target SNR order suppress range sidelobes. In this paper, novel weighted mismatched filter (WMMF) that can reduce sidelobes designed level over specified regions proposed. Two algorithms are provided calculate WMMF...
Phase autofocus is a key step in translational motion compensation for inverse synthetic aperture radar. From the eigenvalue decomposition (EVD) of covariance matrix generated by aligned range-compressed signal, eigenvectors can be obtained effective phase autofocus. However, as number pulse samples increased to improve cross-range resolution, high computational complexity EVD may become burdensome. To address this problem, we propose novel EVD-based method letter. When range units larger...
Waveform diversity, which can be used to obtain synthetic bandwidth or mitigate range ambiguity, interference, and folded clutters, has attracted a great deal of attention in recent years. However, the sidelobe modulation effect between agile pulses yields high range-Doppler sidelobes pulse-Doppler (PD) radar applications, because traditional window functions mismatched filters (MMFs) do not apply. In this article, Doppler-tuned matched filter is equivalently PD result. Then, sidelobes,...
Pulse-Doppler radar systems with medium/high pulse repetition frequencies (PRFs) usually produce severe range ambiguities, and strong nearby ground/sea clutter will then fold into a single interval weak remote target echoes, further limiting the dynamic of radar. The existing methods for modeling or estimating spectra are not applicable to case folded clutter. In recent years, pulse-agile waveforms have attracted an increasing amount attention resolving ambiguities. However,...
Finding codes for the desired autocorrelation function (ACF) based on phase-coded modulation waveforms has always been a popular research topic, and relevant literature is abundant. However, optimized ACF may not be obtained in band-limited hardware due to extended spectral sidelobes generated by instantaneous phase changes. Polyphase-coded FM (PCFM) continuous (CPM), which uses shape filter smooth jumps, can provide effective containment. PCFM using existing codes, original property of ACF,...
In the field of sensor signal processing, windows are time-/frequency-domain weighting functions that widely applied to reduce well-known Gibbs oscillations. Conventional methods generally control spectral characteristics by adjusting several parameters closed-form expressions. Designers must make trade-offs among mainlobe width (MW), peak sidelobe level (PSL), and sometimes fall-off rate (SLFOR) carefully these parameters. Generally, not all sidelobes need be suppressed in specified...
An improved CLEAN algorithm for inverse synthetic aperture radar (ISAR) image processing is presented. adaptive threshold given to detect real targets after preprocessing by the method. The cross-range resolution emphasized. results of are quite good.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Waveform diversity, which can be used to resolve range ambiguity and suppress folded clutter in pulse-Doppler radar system, has attracted an increasing amount of attention recent years. Especially for high pulse repetition frequency (PRF), the severely impacts detection small targets with long low speed. Using diverse waveforms, pulses transmitted sequence are agile. It is possible construct corresponding matched filters (MFs) clutter. However, performance greatly depends on...
In this work, we propose a unified representation for Super-Resolution (SR) and Image Compression, termed **Factorized Fields**, motivated by the shared principles between these two tasks. Both SISR Compression require recovering preserving fine image details--whether enhancing resolution or reconstructing compressed data. Unlike previous methods that mainly focus on network architecture, our proposed approach utilizes basis-coefficient decomposition to explicitly capture multi-scale visual...
Abstract Neural network architecture determines its functional output. However, the detailed mechanisms are not well characterized. In this study, we focused on neural architectures of male and hermaphrodite C. elegans association with sexually dimorphic behaviors. We applied graph theory computational neuroscience methods to systematically discern features these two networks. Our findings revealed that a small percentage sexual-specific neurons exerted dominance throughout entire net-work,...
Unimodular (i.e. constant modulus) sequences with good correlation properties are useful in many areas like communication and radar/sonar. However, several algorithms for designing unimodular the minimisation of sidelobes, which usually cost a lot calculation time hardware resources, not suitable real-time applications. Here, fast algorithm, inversion shaped output mismatched filter (ISO-MMF), is proposed to suppress sidelobes designed level over specified regions. The closed-form solution...
Two pattern recognition algorithms are proposed to detect two types of knots in lumber, lumped and surface knots, using an optical scanner. It is shown that can be recognized by a log profile approach detected image processing approach. A mathematical model for describing the geometry inside based on parameters presented. By breakdown strategy, cut into maximum number boards with prescribed dimensionalities. The knot used predict locations, sizes, orientations, shapes these boards, whereby...
This paper is concerned with the problem of decentralized H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞</sub> filtering for large-scale T-S fuzzy systems, where interconnections are nonlinear and known weights. The algebraic graph theory used to construct a new Lyapunov function such that effects can be included in some constants related interconnected As result, novel scheme derived, corresponding filter synthesis conditions given terms...
Translational motion compensation (TMC) is a significant step for inverse synthetic aperture radar (ISAR), while phase autofocus plays an important role in TMC. By eigenvalue decomposition (EVD), principle eigenvectors of the covariance matrix constructed by complex range-aligned signal can be acquired ISAR-phase autofocus. Nevertheless, purpose enhancing cross-range resolution, observation pulse number should increased. Large will lead to heavy computational complexity due EVD, which may...