Abstract Most of the traditional RFID multi-tag realizes identification by using electromagnetic communication. However, with increasing number multi-tags and complexity interference in application environments, only approach to realize localization cannot meet requirements. Therefore, this paper, a novel STRSC-UNet image denoising method for computer vision enhanced measurement is proposed. Firstly, an system embedded designed tag acquisition. Secondly, Swin Transformer fusing residual...

Abstract In millimeter wave (mmWave) massive MIMO (multiple-input multiple-output) systems, it is difficult to apply conventional digital precoding techniques due hardware constraints. Fortunately, the hybrid can be utilized reduce power consumption and high costs. this paper, a codebook-based scheme for downlink multiuser mmWave systems proposed. Our main idea that analog precoders are designed separately maximize achievable sum rate. domain, we take potential conflict angular domain of...

In the measurement of real radio frequency identification (RFID) system, due to relative and absolute systematic errors, biased estimators do happen in practical measurement, which are difficult be analysed. order get effective estimators, linear nonlinear functions RFID tags taken as a paradigm study equivalence between bias‐corrected estimators. The curve optimum distribution angles multiple is analysed particular based on Fisher information determinant (FID), could used evaluate...

A novel image analysis method for improving the reading performance of radio frequency identification (RFID) system is proposed by arranging geometric distribution multiple tags reasonably based on flood fill and direct linear transformation (DLT) in this paper. An collecting projected to collect RFID tags, an online detection designed measure distance. The has good instantaneity robustness, which could be identified rapidly with tray turning. 2-D images are processed using flood-fill...

The influence of temperature on the dynamical read performance tags is presented in this paper. A RFID detection system including a control devised to simulate dynamic reading UHF system. distance tag measured at different temperature. result shows that reduces with increase test This paper provides an effective method for selection and evaluation

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Abstract The radio frequency identification (RFID) system is vulnerable to a variety of factors (metal, liquid, temperature, and so on) in the practical application. In this paper, reading distance tags, as evaluation criteria for performance RFID system, focused on study influence environmental temperature dynamical an ultra-high (UHF) system. An experimentation including control detection platform, devised measure tag. According experimental data tag's at different fitting model between...

Purpose – The traditional total variation (TV) models in wavelet domain use thresholding directly coefficients selection and show that Gibbs' phenomenon exists. However, the nonzero coefficient index set selected by hard techniques may not be best choice to obtain least oscillatory reconstructions near edges. This paper aims propose an image denoising method based on TV grey theory solve defect of methods.

In the field of radio frequency identification (RFID), three-dimensional (3D) distribution RFID multi-tag networks has a significant impact on their reading performance. At same time, in order to realize anti-collision practical engineering applications, 3D must be measured. this paper, novel method for measurement is proposed. A dual-CCD system (vertical and horizontal cameras) used obtain images from different angles. Then, wavelet threshold denoising remove noise obtained images. The...

Purpose The purpose of this paper is to present a novel method for integrating chaotic exploration and thinning‐based topological mapping deal with the “traverse targets return” problem applied robot navigation in unknown environments. This new strategy can guarantee stronger ability exploring environments, as well recording selecting optimal trajectory return. Design/methodology/approach dynamic evolution controlled multi‐scroll system linked multi‐sensory perception reactive behaviors...

In this paper, a multi-tag optimization method based on image analysis and particle swarm (PSO) neural network is proposed to verify the effect of radio frequency identification (RFID) distribution performance system. A RFID tag detection system with two charge coupled device (CCD). This can automatically focus according its position, so it obtain information more accurately by template matching edge method. Therefore, spatial structure corresponding reading distance be obtained for...

Abstract This paper presents a method for online measuring signal backscattering and reading distance from radio frequency identification (RFID) tags attached to the surface of liquid, calculating corresponding alcohol concentration. We derive theoretical formula on received power. Subsequently, former measurement values are converted Experiments performed using an ISO/IEC 18046-based system in ultra high (UHF) RFID band [ISO/IEC 18046, “Information Technology—Radio Frequency Identification...

In this article, an innovative approach is proposed for multi-sensory integration applied in autonomous navigation smart low-altitude reconnaissance unmanned aerial vehicles (UAVs). The new UAV technique exploits the use of a pan—tilt-based visual sensing system, which able to implement strategy active perception, increasing richness information acquired from environments. addition, based on theory, significant optimality criterion, so-called observation entropy, represented determine set...

One of the important advantages RFID technology is to identify multiple targets at same time. However, in order multi-object time, it necessary solve problem improving performance tag reading. Among factors affecting identification, geometric distribution multi-tag key one. With advantage GA-BP neural network optimization analysis, we do some researches about impacts multi-tag's reader. By training a large number dynamic test data under gate entrance environment, optimal can be predicted by...

Sensitivity is an important factor in the application of RFID tag, and it has attracted widespread attention. Firstly, definition sensitivity introduced, a new test method proposed, which calculates by measuring reading distance. Secondly, distance measured semi-physical verification system. Thirdly, single-tag tested verified. The results have strong agreement with results. Finally, tags group tested. experimental show that this testing effective to tag sensitivity. presented good...

Multi-satellite integrated navigation system, the research focus field both at home and abroad, is expected to improve precision of positioning service security information. The paper starts with an introduction basic concept multi-satellite system. It then follows a literature review covering mainly current status foreign domestic in this field. Subsequently, key techniques GPS/GALILEO system have been explored, modeling method control algorithm based on Kalman filtering technology as...

Flow distribution at core inlet is an important criteria of reactor hydraulic performance, affected by flow device. Compared with the Generation II PWR, AP1000 device has a great changed, it depends on skirt. In order to strengthen understanding field, obtain inlet, and find key factor which influences distribution, this paper establishes whole 3D model studies field based CFX.