2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)最新文献_第5页

Miniaturized Wilkinson Power Divider with DC Isolation 具有直流隔离的小型化威尔金森功率分压器

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597782

Sichen Xie, H. Hayashi

引用次数: 0

Integration of Heterogeneous InSAR Measurements for Mapping Complete and Accurate Three-Dimensional Surface Displacements: A Case Study of 2016 Mw 7.8 Kaiköura Earthquake, New Zealand 整合非均匀InSAR测量以绘制完整准确的三维地表位移:以2016年新西兰Mw 7.8 Kaiköura地震为例

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597791

J. Hu, J.H. Liu, L. X. Wu, Z. W. Li, Q. Sun

{"title":"Integration of Heterogeneous InSAR Measurements for Mapping Complete and Accurate Three-Dimensional Surface Displacements: A Case Study of 2016 Mw 7.8 Kaiköura Earthquake, New Zealand","authors":"J. Hu, J.H. Liu, L. X. Wu, Z. W. Li, Q. Sun","doi":"10.23919/PIERS.2018.8597791","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8597791","url":null,"abstract":"Three-dimensional (3-D) deformation fields associated with the 2016 Mw 7.8 Kaiköura earthquake in New Zealand are retrieved from SAR data acquired by ALOS-2 descending and Sentinel-1 ascending orbits based on the Pixel OffsetTracking technique In particular, a recently proposed method SM-VCE (Strain Model and Variance Component Estimation) is exploited to integrate the heterogeneous InSAR observations. The core idea of this method is exploiting the spatial correlation of the homogeneous points' deformations based on strain model, and determine the exact weights for the heterogeneous InSAR measurements by employing variance component estimation algorithm. The results reveal that the presented SM-VCE method is capable for the retrieval of complete and accurate 3-D deformation fields with respect to this event, which are highly consistent with the GNSS observations. In addition, accuracies of the used heterogeneous InSAR observations as well as the estimated 3-D deformations are quantitatively provided by the presented SM-VCE method.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125646050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Harvesting Sunlight with Titanium Nitride Nanostructures 利用氮化钛纳米结构收集阳光

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598236

S. Ishii, S. Shinde, R. P. Sugavaneshwar, M. Kaur, T. Nagao

引用次数: 2

Direction of Arrival Error for Localization Procedure of Sources with Directional Antenna 定向天线源定位过程中的到达方向误差

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8598174

J. Kelner, C. Ziółkowski, L. Nowosielski

{"title":"Direction of Arrival Error for Localization Procedure of Sources with Directional Antenna","authors":"J. Kelner, C. Ziółkowski, L. Nowosielski","doi":"10.23919/PIERS.2018.8598174","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8598174","url":null,"abstract":"Most methods of radio emission source localization are based on an estimation of received signal parameters. Evaluation of signal reception direction is used in a method called a direction of arrival (DOA). The DOA is one of the most commonly used location methods in wireless systems. Its important advantage is independence from knowledge of a time-frequency structure of the received signal. Therefore, this method is used primarily in military radio reconnaissance systems and electronic warfare. In this paper, we evaluate errors in determining the DOA resulting from propagation phenomena occurring in an urbanized environment. A maximum power received from a given direction is the basis for the estimation of the DOA in most radio direction-finders. Thus, the direction of maximum radiation of the localized object is important because it causes a change of the extremum in a power azimuth spectrum (PAS). Simulation studies are the basis for assessing the DOA error for the transmitters with the directional antennas. To model the impact of propagation phenomena, a multi-elliptical model is used. This model considers the majority of propagation phenomena occurring in the urbanized environment. The possibility of considering patterns of the transmitting and receiving antenna is its important advantage. In this case, the Gaussian is used to model the pattern of the directional antennas. The assessment of the DOA error is carried out for non-line-of-sight conditions between the receiver and transmitter, i.e., the radio direction-finder and localized object, respectively. In simulation studies, the influence of the transmitting antenna parameters, i.e., its beamwidth and direction of maximum radiation, on a shape of the received PASs and their extremums is considered.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115965633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

High Stability Tracking with Sparse Location Information 基于稀疏位置信息的高稳定性跟踪

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597683

Yangpu Cao, Yuan Chen, Yaoran Sun, Sailing He

{"title":"High Stability Tracking with Sparse Location Information","authors":"Yangpu Cao, Yuan Chen, Yaoran Sun, Sailing He","doi":"10.23919/PIERS.2018.8597683","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8597683","url":null,"abstract":"Modern trackers based on traditional image processing or machine learning have made great progress in recent years but still face the problem of error tracking. To make use of these trackers with less error tracking, we propose to combine the object detection and the object localization technology together in our tracking system. The object localization technology can get the positions of moving objects in real time but suffers from low precision, which can compensate this with the modern object detection of high accuracy. The object detection based on deep learning, such as Faster RCNN, which achieves excellent object detection accuracy on PASCAL VOC 2007, 2012 datasets with 300 proposals per image, can get 43 mAP on COCO detection dataset. Object localization devices such as a UWB module will provide us real-time locations of multi-objects with the precision of about 30 cm. These locations can be transformed into pixel coordinates. OpenCV also play an important role in our experiment for providing useful API for camera calibration, coordinate transformation, tracking and so on. With the support of the tools mentioned above, we can develop the state-of-the-art trackers. The major part of the tracker is Long-term Correlation Tracking (LCT). Besides, we provide position information and detection results of our interested objects and try to match them to get reliable positions. By matching the target location from the image tracker and the UWB device, error tracking will be corrected when occurred. The proposed system gives more stable results than existing trackers such as Kernelized Correlation Filters (KCF). This will be helpful for the application scenarios require stable and accurate tracking.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"746 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132126011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Tool for Creating Maps of GNSS Total Electron Content Variations 工具创建地图的GNSS总电子含量变化

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597604

Y. Yasyukevich, I. Zhivetiev, A. Kiselev, I. Edemskiy, S. V. Syrovatsky, A. S. Shabalin, A. Vesnin

引用次数: 3

A 10 GHz Oscillator Based on the Principle of Negative Resistance 基于负电阻原理的10ghz振荡器

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597753

S. S. Olokede, C. J. Okonkwo, C. A. Adamariko, O. Oniyide, M. F. Ain

引用次数: 0

A Triple-Band Monopole Antenna with Dual-Polarization Characteristics 一种具有双极化特性的三波段单极天线

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597893

Ting Wu, Ming-jun Wang, X. Ke, Jiao Wang

引用次数: 0

Investigation of Kalman Filter-KF-Application on a Quasi-Newtonian - QN - Algorithm for Photovoltaic Maximum Power Point Detection - MPPT 卡尔曼滤波- kf在准牛顿- QN -光伏最大功率点检测算法中的应用研究

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597694

J. D. de Carvalho, L. Kretly

{"title":"Investigation of Kalman Filter-KF-Application on a Quasi-Newtonian - QN - Algorithm for Photovoltaic Maximum Power Point Detection - MPPT","authors":"J. D. de Carvalho, L. Kretly","doi":"10.23919/PIERS.2018.8597694","DOIUrl":"https://doi.org/10.23919/PIERS.2018.8597694","url":null,"abstract":"The objective of this work is to investigate the application of Kalman Filters to the estimation of parameters of a Quasi-Newtonian (QN) algorithm in the photovoltaic analysis to improve the Maximum Power Point Tracking (MPPT). Recent work in PV-MPPT [1], demonstrate the applicability of double Kalman Filter to PV-MPPT. In this work, we implement a simulation worksheet of a Kalmar Filter (KF) to identify some improvement on the QN algorithm. The QN algorithm is a powerful method of optimization of convex curves, which is the case of the power curve of a solar module when applied to controlled conditions of temperature and weather. But, there is a distortion of the curve that is made by random processes such temperature changes and shadowing. The objective is to apply the KF to estimate the noise provoked by those processes to obtain a rapid convergence of the algorithm and to mitigate the oscillation around the Maximum Power Point (MPP). The basic idea behind this strategy is to analyze the viability of this method by an implementation and simulation of the convergence time and the oscillation around the MPP using MATLAB.","PeriodicalId":355217,"journal":{"name":"2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134054254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Fast FE-BI Method for the Computation of Monostatic Radar Cross Section 单基地雷达截面的快速FE-BI计算方法

2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) Pub Date : 2018-08-01 DOI: 10.23919/PIERS.2018.8597740

T. Wan, M. Z. Li, B. Tang

引用次数: 0