A5083817305- Direction-of-Arrival Estimation Techniques
- Radar Systems and Signal Processing
- Distributed Sensor Networks and Detection Algorithms
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Retinal Diseases and Treatments
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Color Science and Applications
- Climate Change, Adaptation, Migration
- Retinopathy of Prematurity Studies
- Advanced SAR Imaging Techniques
- Random Matrices and Applications
- Genetic diversity and population structure
- Advanced Measurement and Detection Methods
- Photonic Crystal and Fiber Optics
- Optical Coherence Tomography Applications
- Distributed and Parallel Computing Systems
- Microwave Imaging and Scattering Analysis
- Species Distribution and Climate Change
- Lipid metabolism and disorders
- Avian ecology and behavior
- Scientific Computing and Data Management
Institute of Acoustics
2021-2024
Chinese Academy of Sciences
2021-2024
Institute of Biophysics
2023
University of Chinese Academy of Sciences
2021-2022
Czech Academy of Sciences, Institute of Biophysics
2022
In the problem of multichannel signal detection, when it comes to detector design criteria apart from generalized likelihood ratio test, traditional method is cascade real and imaginary parts parameters, then substitute them into parameter statistics. This not succinct, sometimes may be cumbersome difficult handle. Recently, a complex Rao test was introduced by Kay Zhu without need cascading parameters there no nuisance parameter. Inspired this work, we move further step toward statistics...
Interference can degrade the detection performance of a detector. Previously, several detectors were proposed according to criteria Rao and Wald tests in presence coherent interference. However, these derived by using incorrect Fisher information matrices (FIMs). This article considers problems subspace target three cases We redefine complex parameter sets correct FIMs as well corresponding tests. It is shown that some corrected are new, coincide with existing ones, generalization an one....
In this article, we consider the problem of adaptive detection a multichannel subspace signal in presence constrained interference, which is assumed to be orthogonal whitened space. We derive gradient test, found have same form as existing subspace-based generalized likelihood ratio test (SGLRT). addition, statistical performance SGLRT interference for case mismatch, means that actual does not completely belong presumed subspace. Numerical examples are provided verify theoretical results. It...
In this letter, we consider the problem of detecting a multichannel subspace signal in presence deterministic interference and structure nonhomogeneity. We derive gradient test, Durbin their two-step (2S) variants. The test its 2S variant have same form as existing generalized likelihood ratio for detection problem, whereas are new detectors. Numerical examples show that two proposed detectors, i.e., variant, can provide better performance some scenarios. particular, they robust to mismatch,...
报道了一种基于非线性偏振旋转效应的被动锁模光纤激光器。采用980 nm分布式反馈激光器作为泵浦源,0.5 m长的高掺杂掺铒光纤作为增益介质。实现了脉冲宽度为822 fs的传统孤子锁模脉冲,输出脉冲的平均功率为2.8 mW,信噪比为55.8 dB。通过微调腔内的偏振控制器,实现了传统孤子脉冲和孤子分子脉冲间的切换,孤子分子的脉冲宽度为312 fs,信噪比为53.86 dB。孤子分子脉冲经掺铒光纤放大器放大后泵浦一段57 m长的高非线性光纤,产生了位于第三近红外窗口(1600 nm~1870 nm)的超连续谱,其20 dB谱宽为355.8 nm。
SUMMARY High myopia (HM) is one of the leading causes visual impairment and blindness worldwide. Here, we report a whole-exome sequencing (WES) study in 9,613 HM cases 9,606 controls Han Chinese ancestry to pinpoint HM-associated risk variants. Single-variant association analysis identified three novel genetic loci associated with HM, including an East Asian ancestry-specific low-frequency variant (rs533280354) FKBP5 . Multi-ancestry meta-analysis WES data 2,696 7,186 European from UK...
In this paper, a large number of digital printing reflective film retroreflectivity measurement. Based on the multi-angle test mainstream manufacturers in market, reverse reflection coefficient was obtained. Through curve fitting measured values backreflection under different measuring angles by using scatter plot, variation law luminosity with incident Angle and observation The explored paper has certain significance to application guidance for traffic signs.
设计了一种由类噪声脉冲抽运的全光纤结构平坦超连续谱光源。在色散管理掺铒光纤激光器中通过调节腔内偏振态，在泵浦功率为450 mW时，实现了稳定的类噪声脉冲锁模，锁模脉冲的中心波长为1 600 nm，脉冲宽度为303 fs。在最大泵浦功率为1 W时，谐振腔直接输出功率为8.6 mW。较低的功率无法有效拓展超连续谱宽度，为此设计一种掺铒光纤放大器进行功率放大，放大器最大输出功率为338 mW，将功率放大后的类噪声脉冲耦合进高非线性光纤以产生超连续谱，超连续谱的20 dB光谱范围为1 530 nm～2 300 nm，在1 736 134 nm范围内，光谱的平坦度优于0.5 dB。