In an adaptive beamforming system, the mutual coupling effects among array elements can seriously degrade system performance. this paper, we propose a robust algorithm using uniform linear (ULA) to mitigate effects. The proposed is based on fact that matrix (MCM) of ULA be approximated as banded symmetric Toeplitz between two sensors inversely related their separation and negligible for few wavelengths away. By exploiting structural characteristics MCM, subspace-based method used estimate...

Time Series Forecasting (TSF) is a crucial task in various domains, yet existing TSF models rely heavily on high-quality data and insufficiently exploit all available data. This paper explores novel self-supervised approach to re-label time series datasets by inherently constructing candidate datasets. During the optimization of simple reconstruction network, intermediates are used as pseudo labels paradigm, improving generalization for any predictor. We introduce Self-Correction with...

Abstract Optical-fiber temperature sensors have the advantages of strong anti-interference and high accuracy, which are widely used in industrial production, while fluorescence lifetime is a common parameter for indirect measurement. In this paper, small precision optical-fiber sensor based on designed samples fabricated. order to improve acquisition accuracy lifetime, software hardware parts were debugged. terms algorithm, weighted least squares method fit decay curve signal calculate...

Phase-sensitive weak measurement systems have been receiving an increasing amount of attention. In this paper, we introduce a series working areas. By adjusting the pre-selection and post-selection states total phase difference between vertically polarized light horizontally light, value is amplified by several times in one system. Its applicability verified label-free internal reflection The original sensitivity resolution are improved at different areas, reaching 1.85 um/refractive index...

In this study, we propose a multifunctional weak measurement system that can measure the optical rotation and refractive index of solution. The center wavelength output spectrum such is sensitive to phase difference produced by total internal reflection. resolution solution determined proposed method were 3.26 × 10–5° 3.93 10–7 RIU, respectively, measuring different concentrations glucose As are important properties solution, be used determine type solute in future.

In this paper, we propose a linear differential detection system based on frequency domain weak measurement. The can be used for detecting optical substances. Moreover, completed an experiment to detect himan serum albumin (HSA) content in mixture of human and l-proline via dialysis. This work also proves the function system. further extended protein mixed solution that contains macromolecules various small molecules. It is very important molecules without photomarking solutions complex...

In this paper, we propose a post-Gaussian filtering theory for weak measurement in the frequency domain, and highly deformed digital technique that can be used to optimize sensors based on weak-frequency techniques. We completed experimental verification total internal reflection sensor. The results show technology system working range, sensitivity, resolution of domain system, so it reach 0.210 rad, 3210.9 nm/RIU, 7.12×10-7 RIU, respectively.

In this paper, we research the problem of two-dimensional (2-D) direction-of-arrival (DOA) estimation in massive multi-input multi-output (MIMO) systems and propose a 2-D DOA algorithm for MIMO based on large-scale uniform rectangular array (URA). our algorithm, URA is firstly divided into four smaller subarrays, including two pairs shifted URAs. The proposed exploits rotational invariance relations URAs to estimate DOAs multiple signals. Our has much lower computational complexity than...

To integrate multispectral technology for high-precision spectral analysis of insulator pollution and aging, it is essential to develop a more accurate model detection acquire precise position information the insulators. This paper presents novel region based on YOLOv5, which addresses challenges image alignment target detection. The designed detect insulators images extract their information, thereby laying foundation evaluating state using images.

A phase-sensitive weak measurement biosensor was proposed for the detection of carcinoembryonic antigen (CEA), one common category tumor markers. The total internal reflection (TIR) at interface prism without precious metal coating exploited to introduce phase delay between horizontal and vertical polarizations, which can be determined through central wavelength shift output spectra sensing refractive index sample. In analysis, specific binding reaction markers with a change on surface...

A differential weak measurement system was presented, exhibiting the self-referencing function for biomolecule real time detection as a label-free optical biosensor. We built Sagnac interferometer, which limited horizontal (H) and vertical (V) polarization to propagating along common path but in opposite directions realize measurements with two measuring channels installed corners of this interferometer. By introducing half wave plates into alternately convert between H V polarization, we...

In this paper, a novel method for two-dimensional (2-D) direction-of-arrival (DOA) estimation employing sparse L-shaped array is proposed. The composed of one traditional uniform linear (ULA), ULA and an auxiliary sensor. the proposed method, elevation angles are estimated by two steps. first step to estimate ambiguous angle ESPRIT-like method. second remove ambiguity disambiguation procedure. Then, azimuth estimates all data cross-covariance matrix (CCM) without any pairing procedures....

The traditional method of frequency domain weak measurement has a lot noise. In this paper, we analyze the 2000 curves obtained by experiments and get conclusion that signal-to-noise ratio will increase with signal strength. We simulated 252 produced phase change used to fit relationship between original calculation our spectral height (HR) method. Through previous experimental data verification, can greatly reduce system noise dual-mode working area in measurement. At present, universal...

Fluorescence probes have distinct yields and lifetimes when located in different environments, which makes the reconstruction of fluorescence molecular lifetime tomography (FMLT) challenging. To enhance performance time-domain (TD) FMLT with heterogeneous targets, a self-guided L1 regularization projected steepest descent (SGL1PSD) algorithm is proposed. Different from other algorithms performed time domain, SGL1PSD introduces time-resolved strategy into yield reconstruction. The consists...

<p> Artificial intelligence technology has already had a profound impact in various fields such as economy, industry, and education, but still limited. Meta-learning, also known "learning to learn", provides an opportunity for general artificial intelligence, which can break through the current AI bottleneck. However, meta learning started late there are fewer projects compare with CV, NLP etc. Each deployment requires lot of experience configure environment, debug code or even...

We propose a self-referential fast detection scheme for frequency domain weak measurement system the of enantiomeric impurities in chiral molecules. In transmissive system, optical rotation (OR) is used to modify pre-selected polarization state and post-selection state. obtained sum difference rotations produced by sample standard rotating quarter wave plate system. Then, we estimate ratio molecules using central wavelength shifts caused addition subtraction states described above. this...

Abstract The process of unwinding and renaturation DNA has been widely used in studies nucleotide sequence organization. Compared with traditional methods for renaturation, the label-free non-destruction detection technology is significant desiderated. We realized an optical system based on rotation via weak measurement single- double-strand state DNA. rotation, which was induced by status change single double strands, exploited to modulate preselected polarization a system. With this...

Image denoising has always been a hot research issue in the computer vision community, which aims to reduce noise digital images improve image quality. As key step many downstream tasks, widely used fields such as medical agricultural images, satellite remote sensing face recognition, vehicle detection and other fields. However, limited by problems insufficient actual data sets, uneven reduction ability of different models, performance same model on sets results for scales noise, existing...

Paying a timely tribute to the ancient root meaning of "hospitale," emblematic granting haven for those in desperate need, this study comprehensively investigates direct and indirect relationships constituting co-created experiences quarantine hotel stay, an emerging hospitality product genre COVID-19 era. Data on inbound quarantined guests were collected China, where solid "Dynamic Zero Covid" policy is place. Research results from structural equation modeling revealed customers' value...

The career planning and employment guidance courses in colleges universities play a crucial role helping students prepare for their future careers. However, with the rapid changes economy job market, these need to be reformed innovated better meet evolving needs of students. This thesis explores current status new era, identifies challenges faced by courses, proposes strategies reform innovation.

This paper proposes a novel method for two-dimensional (2-D) direction-of-arrival (DOA) estimation of multiple signals employing sparse L-shaped array structured by linear (SLA), uniform (SULA) and an auxiliary sensor. In this method, the elevation angles are estimated using SLA efficient search approach, while azimuth angle is performed in two stages. first stage, rough estimates obtained utilizing noise-free cross-covariance matrix (CCM), data from three sensors including second fine can...

This paper proposes a numerical model of the dynamic time over threshold (DTOT) method for semi-Gaussian signals. The parameters are optimized accordingly in design prototype DTOT circuit. A photomultiplier tube was coupled to 2-inch LaBr3 scintillator and connected charge sensitive preamplifier. signal shaped sent feasibility technique has been verified by experimental results, which achieve 2.3% integral nonlinearity 7-bit range.