A5103059675- Advanced SAR Imaging Techniques
- Microwave Imaging and Scattering Analysis
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Tea Polyphenols and Effects
- Ultrasonics and Acoustic Wave Propagation
- Antenna Design and Optimization
- Fermentation and Sensory Analysis
- Advanced Neuroimaging Techniques and Applications
- Fungal Biology and Applications
- Functional Brain Connectivity Studies
- Imbalanced Data Classification Techniques
- Underwater Acoustics Research
- Aquaculture disease management and microbiota
- Bacteriophages and microbial interactions
- Advanced MRI Techniques and Applications
- Face and Expression Recognition
- Machine Learning and Data Classification
- Pharmaceutical and Antibiotic Environmental Impacts
- Microbial Metabolism and Applications
- Direction-of-Arrival Estimation Techniques
- Radar Systems and Signal Processing
Northwest University
2025
Nanjing University of Science and Technology
2015-2024
National University of Singapore
2024
Sichuan Agricultural University
2022-2023
Science and Technology Department of Sichuan Province
2022
Bistatic synthetic aperture radar (BiSAR), which can break through the limitations of conventional monostatic SAR on forward-looking imaging, continues to gain in significance due a variety applications, like missile terminal guidance. To improve Doppler resolution and avoid azimuth ambiguities missile-borne SAR, an extended nonlinear chirp scaling (NLCS) algorithm for bistatic (FLMB-SAR) is proposed this paper. Based novel configuration with stationary transmitter receiver, not only image...
Microbes are critical for the flavor development of Sichuan South-road Dark Tea (SSDT) during pile-fermentation. However, their mechanism action has not been fully elucidated yet. In this study, SSDT microbial metagenome obtained from different locations piled tea center pile-fermentation metaphase were functionally annotated, and glycoside hydrolase (GH) genes core functional strain comprehensively analyzed. The results revealed that carbohydrate metabolism (8.2%) predominant in total...
Goat lactoferrin is an N-glycoprotein, and its glycan moieties are essential for biological activity. However, the structures of these glycans, particularly sialylated isomers with α-2,3- or α-2,6-linkages, remain poorly characterized. Utilizing online hydrophilic liquid chromatography-tandem mass spectrometry, our study characterized N-glycans in goat across different lactation stages, putative 86 were presented, including 53 previously undetected ones. The content variety decreased from...
For forward-looking linear-array synthetic aperture radar (FLLA-SAR) with constant acceleration, the conventional hyperbolic range model is incorrect, and range-dependent cell migration (RCM) cannot be ignored any more. Hence, traditional chirp scaling (CS) algorithm based on also used. To overcome these problems, a modified for FLLA-SAR which has taken platform's acceleration into consideration proposed in this letter. Based model, an improved CS method to eliminate space-variant...
Microbes are critical in the Sichuan South-road Dark Tea (SSDT) organoleptic quality development during pile-fermentation. Piled tea center at fermenting metaphase is crucial for conversion of its components. In this study, we investigated microbial community piled SSDT below stacked surface 15 cm (SSDTB), 50 (SSDTX), and 85 (SSDTH) on second turning time pile-fermentation, respectively. Results showed that SSDTH SSDTB had a higher similarity community. Pantoea (36.8%), Klebsiella (67.7%),...
In order to improve the azimuth resolution beyond what monostatic synthetic aperture radar (SAR) can achieve in forward-looking area, an asymmetric configuration bistatic SAR system and its imaging algorithm are proposed this paper. The transmitter is mounted on a fixed platform side-looking mode while receiver moves along nonlinear trajectory mode. Due high velocity acceleration of maneuvering both along-track height direction, traditional algorithms no longer applicable. paper, new based...
Fractional Fourier transform (FrFT) is a generalized form of the well-known Transform that offers superior detection and recognition chirp signals. In this paper, scaling algorithm (CSA) for forward-looking linear-array synthetic aperture radar (FLLA-SAR) imaging presented using FrFT based on an equivalent squint model. Simulated results demonstrate validity efficiency proposed algorithm.
The imaging system of high-speed diving forward-looking liner array SAR (HDFLLA-SAR) can provide images the area in front platform movement, which has been widely used fields aircraft blind landing, geological exploration, reconnaissance surveillance, precision guidance, and so on. In recent years, it become one research hotspots field imaging. this paper, geometric configuration echo signal model HDFLLA-SAR is established based on complex motion state carrier platform. Then, model,...
Due to the steering of antenna beam in azimuth direction and special imaging geometry, there are two main challenges squint TOPSAR data processing: severe range-azimuth coupling signal aliasing problem. To overcome these problems, a new algorithm is proposed this paper. First, nonlinear range walk correction (NLRWC) applied shear spectrum remove aliasing. Then, an extended chirp scaling adopted compensate azimuth-dependent frequency modulation rate. Finally, image can be achieved after...
Linear array maneuvering synthetic aperture radar (SAR) can push the limitations of classical SAR on foresight 3-D imaging, which has captured attentions worldwide researchers for a long time. To reconstruct position target, this paper puts forward nonlinear chirp scaling method linear (FLAM-SAR). According to novel geometry configuration, operation is adopted equalize space-variant Doppler frequency modulation rate. The simulation results point scatterers and real airplane target model are...
Airborne synthetic aperture radar (SAR) is easily affected by noise interference in complex electromagnetic environment. Thus, the resolution of SAR greatly affected, and even it can't be imaged. Aiming at typical interference, an suppression method based on blind signal separation (BSS) studied this paper. Firstly, multi-component obtained processed joint approximate diagonalization eigenmatrices (JADE). Then statistical characteristics signals multiple channels can calculated to identify...