A5100406622- Advanced SAR Imaging Techniques
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Advanced Measurement and Detection Methods
- High-Temperature Coating Behaviors
- Ultra-Wideband Communications Technology
- Combustion and Detonation Processes
- PAPR reduction in OFDM
- Guidance and Control Systems
- High Entropy Alloys Studies
- Microwave Imaging and Scattering Analysis
- Wireless Communication Networks Research
- Fire dynamics and safety research
- Geophysical Methods and Applications
- Radar Systems and Signal Processing
- Advanced Measurement and Metrology Techniques
- Robotics and Sensor-Based Localization
- Computational Fluid Dynamics and Aerodynamics
- Astronomical Observations and Instrumentation
- High Temperature Alloys and Creep
- Adaptive Control of Nonlinear Systems
- Additive Manufacturing Materials and Processes
- Optical Systems and Laser Technology
- Target Tracking and Data Fusion in Sensor Networks
- Parallel Computing and Optimization Techniques
- Embedded Systems and FPGA Design
Beijing Institute of Technology
2004-2025
Jishou University
2024
Beijing Electronic Science and Technology Institute
2023
Harbin Institute of Technology
2023
Anhui University
2022
Shenyang Institute of Engineering
2022
Beihang University
2016-2021
North University of China
2020-2021
Shanghai Institute of Technology
2020
Air Force Engineering University
2011
Long-time integration is an effective method to improve target detection performance in a noisy background. However, when detecting high-speed and maneuvering targets by long-time integration, it easy encounter the across range unit Doppler effects, which deteriorate of algorithms with low computational complexity, such as moving hybrid (HI). The generalized Radon-Fourier transform (GRFT) detector has proven have best performance. GRFT high burden for ergodic search multidimensional motion...
It is known that accurate motion parameter estimation makes significant benefits to radar target tracking, imaging and recognition. However, maneuvering targets usually cause across-range-unit across-Doppler-unit effects, which make it difficult accurately estimate the parameters of target. The generalized Radon-Fourier transform (GRFT) has been proposed vector targets, but only noise scenario considered. In this paper, normalized adaptive GRFT (NAGRFT) first for estimation, proven be...
Translational compensation is a crucial step in inverse synthetic aperture radar (ISAR) imaging. However, nonparametric methods may collapse under the condition of low signal-to-noise ratio (SNR), and high-order parametric usually have large computational load. In this article, two cascaded integration are proposed to solve problems above based on generalized Radon-Fourier transform (GRFT). The first method models translational motion as polynomial utilizes subaperture GRFT (SAGRFT), which...
Synthetic aperture radar (SAR) has evolved into an essential Earth observation technique. Geometric quality is one of its most fundamental elements to ensure subsequent applications. Excellent localization accuracy requires comprehensive error compensation and calibration. While traditional calibration work time-consuming depends on the test sites. Besides, available sites are scarce unevenly distributed for certain SAR satellites. It is, hence, necessary research how make geometric without...
This paper designs a multi-channel data synchronous acquisition and playback system to realize the function of ADC chips, Field Programmable Gate Array (FPGA) receiving processing digital data, DAC playback. Because high-speed serial protocol JESD204B can easily channel synchronization between converters FPGA, interface eliminates redundant associated clock, adopts as interface. Based on characteristics good real-time performance, simple structure, flexibility efficiency System Chip (SoPC),...
Abstract In this paper, GH4169 nickel-based superalloy molded samples produced by Selective Laser Melting (SLM) were subjected to aging treatment and solution study the high temperature oxidation behavior under different heat treatments. It is found that products of SLM mainly Cr2O3. The alloy sample has a higher rate. oxide film treated forming speed, surface continuous dense, quality best, protection effect on matrix best.
Aiming at the problem that detection of small planes with unobvious texture is easy to be missed in augmented reality scene, a 3D scene information enhancement method grab for proposed based on series images real taken by monocular camera. Firstly, we extract feature points from images. Secondly, match different images, and build three-dimensional sparse point cloud data camera internal parameters. Thirdly, estimate position size cloud. The can used provide extra structural reality. In this...
The dechirp-receiving radar measures range by the frequency difference between target echo and reference signal. It can operate at a low sampling while transmitting wideband signal, which simplifies hardware. However, when detecting high-speed highly maneuvering targets, residual video phase (RVP), mismatch, modulation (FM) rate across range-Doppler unit (ARDU) problems occur after dechirp receiving, cause difficulties in integrating result severe performance loss. To solve these problems,...
The instability of the missile body and large miss distance is likely to appear in traditional separation guidance control systems. integrated (IGC) design an effective way avoid these problems. However, for passive homing missiles, obtaining relative distance, approach velocity target maneuvering acceleration controller a major difficulty. A filter model established modified polar coordinates, whose states are required information controller. Taking weak observability tracking into...
Long-time integration is an effective method to improve the signal-to-noise ratio (SNR) and detection performance of highly maneuvering targets. The existing methods for long-time mainly focus on detecting targets with high-order motion under fixed model, losing sight possibility that may have abrupt change at unknown instant. Therefore, this paper proposes a novel target model (ACM) based generalized Radon-Fourier transform (GRFT), which could coherently integrate echoes before after ACM...
Severe phenomena of across range-Doppler unit (ARDU) and decoherence occur when radar detects high-speed high-maneuvering targets, causing degradation in detection performance traditional FFT methods. The improvement resolution causes a multi-dimensional spread phenomenon, where different scattering centers the target are distributed on range units, along with motion parameters such as velocity acceleration. Unfortunately, current methods focus solely targets cannot handle spread, leading to...
The 3-D inverse synthetic aperture radar (ISAR) imaging technology is widely used for noncooperative targets, which can obtain precise topography, structure, and rotation information of celestial target. However, target observation has the features long distance, low echo signal-to-noise ratio (SNR), complex characteristic, severely degrades performance traditional ISAR methods. Therefore, in order to realize high-precision target, a parametric method proposed this article. First, model...