A5100303534- Advanced SAR Imaging Techniques
- Radar Systems and Signal Processing
- Structural Response to Dynamic Loads
- Advanced Measurement and Detection Methods
- Hippo pathway signaling and YAP/TAZ
- Structural Behavior of Reinforced Concrete
- Sparse and Compressive Sensing Techniques
- Geotechnical Engineering and Underground Structures
- Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
- Inertial Sensor and Navigation
- Optical Systems and Laser Technology
- Radio Astronomy Observations and Technology
- Concrete Corrosion and Durability
- Ultrasonics and Acoustic Wave Propagation
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Machine Fault Diagnosis Techniques
- Microwave Imaging and Scattering Analysis
- Cytokine Signaling Pathways and Interactions
- Structural Health Monitoring Techniques
- Melanoma and MAPK Pathways
- IL-33, ST2, and ILC Pathways
- Structural Load-Bearing Analysis
- Cell death mechanisms and regulation
- Target Tracking and Data Fusion in Sensor Networks
Tohoku University
2024
Peking University
2024
Shanghai University
2022
Jilin Jianzhu University
2022
Shanghai Power Equipment Research Institute
2018-2021
To satisfy the easy-construction demands of precast concrete (PCa) frames after an earthquake, a PCa frame with mortise–tenon (MT) connections is proposed in this paper. MT are secured solely through binding force unbonded prestressed tendons without grouting for easy construction. The design and construction joint detailed. During hinge system connection allows slight rotational movements. Finite element analysis was employed to assess joint’s hysteresis behavior, revealing three-stage...
The characteristics of the distribution helicopter radar echo on time-frequency two dimensional detection plane, a recognition method based adaptive convolution kernel filtering in frequency domain is proposed. Comparison with most target echoes, rotor presents special expansion plane. Especially low pulse repetition radar, further under-sampling characteristics. This feature has greater degree division dimension other echoes. Two and measured data carried out. results can be used for...
Aiming at ultra-wideband signal with sparse frequency domain, an reconstruction technique based on compressed sensing non-uniform sampling system is proposed, solving the problem that not only traditional theorem causes too large which resulting in waste of resources, but also development hardware equipment can be satisfied short term. This letter introduces a structure, under-sampling and then recover by using OMP algorithm. method putting forward this paper effectively solve frequency, low...
For the defect of requiring artificially set manoeuvring parameters in traditional target models, an adaptive frequency tracking algorithm based on acceleration pre-estimation model (APM) was proposed. On basis APM, which has a better performance compared with current statistic model, this study used residual vector to determine variance target's manoeuvring, and realised adjustment for by using non-linear function, solved problem APM. The simulation results showed that improved effectively...
In practical application, fast search is necessary for space-based radar to avoid collision. The rapid and efficient selection of the parameter in always a hard pot. this paper, optimization algorithm that minimizes time proposed. proposed method, novel objective function, which synthetically integrates influence factors area, beam irradiation surface "residence time", defined. method both theoretical value. experimental simulation verified effectiveness efficiency method.
For sparse ultra-wideband signals in frequency domain, the non-uniform adoption system is used to sample at different rates. OMP algorithm, LASSO algorithm and BCS are recover non-uniformly sampled signal. According analysis comparison of simulation results, following conclusions drawn: BSC has little change time-consuming robustness with increase number observations, better reconstruction performance when observations low noise included.
Aiming at the rising demand of signal processing in modern radar system, and increasing requirement real-time performance battlefield environment, an optimized parallel pulse compression algorithm based on multi-core DSP was proposed. Using DIT-FFT principle, The FFT a large-point could be decomposed into four quarter-length FFTs, then computed by cores DSP, utilizing SIMD (Single Instruction Multiple Data) instructions built-in functions. simulation results showed that proposed this paper...
In Synthetic Aperture Radar (SAR) images, azimuth ambiguity is an important factor affecting image quality. Azimuth Doppler spectrum theoretically infinite that not limited by bandwidth. Due to sampling, the part larger than pulse repetition frequency folded into a (PRF), so it difficult find solution remove completely using traditional methods. Especially in ocean caused strongly scattered land, island or ship targets will affect detection of sea targets. Aiming at problem loss resolution...