A5110853420- Antenna Design and Optimization
- Wireless Communication Networks Research
- Satellite Communication Systems
- Advanced Wireless Communication Techniques
- Cooperative Communication and Network Coding
- Direction-of-Arrival Estimation Techniques
- Cancer-related molecular mechanisms research
- Antenna Design and Analysis
- Drug Solubulity and Delivery Systems
- MicroRNA in disease regulation
- Speech and Audio Processing
- Coding theory and cryptography
- Advanced Adaptive Filtering Techniques
- Opportunistic and Delay-Tolerant Networks
- Microwave Engineering and Waveguides
- Radar Systems and Signal Processing
- Advanced Antenna and Metasurface Technologies
- Genomics, phytochemicals, and oxidative stress
- Analytical Chemistry and Chromatography
- Curcumin's Biomedical Applications
- Computational Drug Discovery Methods
- Advanced SAR Imaging Techniques
- RNA modifications and cancer
- Natural Antidiabetic Agents Studies
- Full-Duplex Wireless Communications
Shanghai Micro Satellite Engineering Center
2012-2025
Harbin Institute of Technology
2025
Taiyuan University of Technology
2023-2025
Wenzhou Medical University
2018-2025
Hangzhou Medical College
2023-2025
Innovation Academy for Microsatellites of Chinese Academy of Sciences
2020-2025
University of Chinese Academy of Sciences
2023-2024
Wenzhou University
2023
University of Shanghai for Science and Technology
2016
Shanghai Institute of Microsystem and Information Technology
2014
LEO satellite communication network has become a promising approach to provide broadband access internet service in low infrastructure areas. However, the satellites are generally cost-constrained and relative motion between earth is high-speed. As result, faces limited on-board resources changing traffic demand distribution. In this paper, we design beamhopping based system for communication, where onboard allocated flexibly according distribution, which can improve performance of...
Abstract: It is recognized that myeloid differentiation protein 2 (MD-2), a coreceptor of toll-like receptor 4 (TLR4) for innate immunity, plays an essential role in activation the lipopolysaccharide signaling pathway. MD-2 known as neoteric and suitable therapeutical target. Therefore, there great interest development potent inhibitor anti-inflammatory therapeutics. Several studies have reported xanthohumol (XN), natural product from hops beer, can block TLR4 by binding to directly....
This letter addresses the long-time coherent integration issue for weak maneuvering target detection in a staggered pulse repetition interval (PRI) radar system. Due to random phase fluctuation caused by varied PRI, complex range-azimuth coupling effects will significantly deteriorate performance. In this letter, nonuniformly sampled signal is efficiently reconstructed into uniform grid based on filterbank framework, where uniformly spectrum of fast-moving with Doppler ambiguity can also be...
An 61-channel digital beamforming transmitter array antenna used in mobile satellite communication is presented this paper. It can steer 16 beams simultaneously. The interface, architecture and subunits are described detail. Standard hexagonal (SHA) RF front ends designed. Genetic Algorithm adopted to realize the pattern synthesis with muti- objective optimization. signal ∞ow hardware platform of network discussed, which complete high speed processing maximum throughput 34.16Gbps. A novel...
Co-amorphous systems have been proven to be a promising strategy address the poor water solubility of poorly water-soluble drugs. Generally, initial dissolution behaviors after co-amorphous system preparation and potential recrystallization during storage are used evaluate performance systems. However, this study reveals that decreased unexpected increased were observed though maintained amorphous form. Three drugs (valsartan, tadalafil, mebendazole) three co-formers (arginine, tryptophan,...
Chalcone is a plant metabolite widely found in fruits, vegetables, spices and tea, has anti-tumor, anti-inflammation, immunomodulation, antibacterial anti-oxidation activities, as well many other pharmacological biological effects. Our team shown that its analogs have antioxidant activity, oxidative stress pathological hallmark of retinal ischemia/reperfusion injury can lead to damage visual loss. This investigation aims identify chalcone protects ganglion cells vitro from the effects...
Compressive sensing is an effective way to reconstruct the network structure. In this paper, we investigate effect of mixing patterns, measured by assortative coefficient, on performance reconstruction. First, present a model generate networks with different assortativity coefficients, then structure using compressive method. The experimental results show that when coefficient $r=0.2$, accuracy reconstruction reaches maximum value, which suggests more for uncovering links social networks....
As for a new-style radar, the random pulse repetition interval (PRI) waveform may be transmitted, and then target Doppler parameter estimation precision detection ability by using conventional techniques invalid due to irregular signal sampling. To solve these problems, this letter proposes simple, yet effective quasi-optimal coherent integration method with resampling. The proposed first reconstructs nonuniformly sampled into uniform grid in range frequency domain based on modified sinc...
This paper presents a 61-channel digital beamforming transmitter array antenna for the mobile satellite communication application, that can form sixteen beams simultaneously .After general introduction, architecture and interconnect design of is discussed. Subsequently, two key technologies DBF system are proposed: 1) rapid signal processing distributed network 2) calibration methodologies with ease in project implementation. Finally, measurements results demonstrate exceptional capability...
Errors in the attitude of optical payloads onboard remote-sensing satellites have a significant impact on image quality and high-precision quantification. This study presents two on-orbit calibration techniques for payloads. Self-calibration orientation axis an payload can be achieved through observation imaging star points based pinhole principle. Separate facilitate mutual sensor as well correction their installation errors. These are validated ground satellite tests. The results show...
This paper presents a semi-physical simulation system for 61-channel DBF array transmitter antenna on LEO satellite.It consists of hardware platform digital beamfoming network (BFN) and software array.The background wideband input interface are described, the signal process beamforming is discussed in detail.General DFT filter bank, distributed arithmetic (DA) algorithm Hartley image rejection structure adopted to design BFN, which make calculation BFN reduced by 98.41% get multiplier...
A dual circularly polarized antenna array with high gain, good axial ratio and low sidelobes for satellite communication is proposed. The shared-aperture can realize right-hand (RHCP) left-hand (LHCP) radiation simultaneously at S band by using a directional coupler connected an H-shaped aperture coupling network coplanar microstrip feed network. two networks, which share the same ground in center, are arranged on both sides of respectively. This arrangement ensures linearly polarization...
To provide a tool for performance analysis of multibeam CDMA-based LEO satellite system, this paper establishes comprehensive evaluation model voice and packet communication respectively, proposes three metrics: capacity, throughput delay. And moreover with practical seven-beam antenna pattern, we firstly develop novel simulation algorithm based on geometric relations to analysis. It is shown that system capacity reduced the increase two types Power Control Error (PCE): PCE shadowed user...
Complementary codes (CCs) are a kind of two- dimensional spreading with both ideal auto- and cross- correlation properties. Such attractive feature enable complementary coded code division multiple access (CC-CDMA) system outperform the traditional CDMA one-dimensional in terms interference resistance. However, it will lose such superiority over requency selective fading channels due to strict equal gain combination requirement CCs.This paper proves property constraints CCs realize an...