发布求助
文献互助 智能选刊 最新文献

2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)最新文献

筛选
英文 中文
Subarea Approach for Curvature Error Compensation in Spotlight SAR Imaigng Using PFA Interpolation 基于PFA插值的聚束SAR成像曲率误差补偿的子区域方法
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602923
Jin-Woo Kim, Tae-dong Yeo, Byungkuon Ahn, Jong-Won Yu
{"title":"Subarea Approach for Curvature Error Compensation in Spotlight SAR Imaigng Using PFA Interpolation","authors":"Jin-Woo Kim, Tae-dong Yeo, Byungkuon Ahn, Jong-Won Yu","doi":"10.1109/USNC-URSI.2018.8602923","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602923","url":null,"abstract":"In SAR imaging, when the range from a platform to a target is not large enough compared to the target scene diameter, the curvature error in the mixing process can be significant and it distorts an image. In order to reduce the effect of the curvature error on the image, subarea technique is utilized when the far-field assumption is invalid. We propose the subarea technique that reduce the curvature error by reducing the size of the target area while reducing the discontinuity at the same time.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"16 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120856707","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
Development of a Novel Three Dimensional Frequency Selective Surface Using Polyurethane Foam for Communication Bands 一种新型通信波段用聚氨酯泡沫塑料三维选频表面的研制
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602592
Varsha Mishra, Punit Singinal, Smitha Puthucheri, Dharmendra Singh
{"title":"Development of a Novel Three Dimensional Frequency Selective Surface Using Polyurethane Foam for Communication Bands","authors":"Varsha Mishra, Punit Singinal, Smitha Puthucheri, Dharmendra Singh","doi":"10.1109/USNC-URSI.2018.8602592","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602592","url":null,"abstract":"The focus of this paper is to develop a low cost, light weight three dimensional (3D) frequency selective surface (FSS) with reduced fabrication complexity over 2D FSSs and can be used in the communication field. Nowadays, 3D FSS is taking too much attention because it provides high degree of freedom in controlling transmission/reflection response. Therefore, in this paper, a 3D FSS has been attempted by inserting three concentric conductive cylindrical rings in to a polyurethane foam. The proposed concentric triple cylindrical ring 3D FSS aims to work as a band stop in the GSM-900, UMTS-1800 and LTE-2300 frequencies. CST software is used to simulate and optimize the dimensions of FSS. After that, measurement of developed concentric triple cylindrical ring 3D FSS is carried out in free space. Measurement results are in good agreement with simulation results. To shield the communication band in the secure places, this type of low cost structure may be quite useful.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121482243","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
Vegetation Effect in Paddy Field for a Wireless Sensor Network 基于无线传感器网络的水田植被效应研究
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602773
Daisuke Kuramoto, Tatsuki Tokunou, T. Hamasaki
{"title":"Vegetation Effect in Paddy Field for a Wireless Sensor Network","authors":"Daisuke Kuramoto, Tatsuki Tokunou, T. Hamasaki","doi":"10.1109/USNC-URSI.2018.8602773","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602773","url":null,"abstract":"In this paper, we report the influence of vegetation in paddy fields with antenna height as a parameter for 2.4GHz (3mW) and 920MHz (20mW) propagation. From the viewpoint of practicality, a commercially available wireless communication module equipped with a small pattern antenna was used for the experimental apparatus. In order to consider the worst case of communication loss, detailed measurements were made assuming the height of rice grown 105 cm, and the antenna height was 55cm, 105cm, 155cm. Based on the measurement results, fitting was performed on the Exponential Decay (EXD) model, and the propagation characteristics in paddy fields were verified. As a result, at 2.4GHz, even under line-of-sight conditions, there was attenuation due to the influence of scattering of reflected waves due to plant arrangement, and it was found that the same degree of remarkable attenuation due to vegetation occurred regardless of the height under rice top. On the other hand, at 920MHz, which is said to have strong diffraction, it was revealed that the loss characteristic of vegetation is proportional to the height.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123348363","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: 4
A 243 GHz Direct-Conversion FMCW Transceiver for Radar Moving Target Signature Measurements 用于雷达运动目标特征测量的243ghz直接转换FMCW收发器
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602505
G. Demartinis, B. Soper, J. Cook, T. Horgan, L. Horgan, C. Beaudoin, Jason C. Dickinsor, A. Gatesman
{"title":"A 243 GHz Direct-Conversion FMCW Transceiver for Radar Moving Target Signature Measurements","authors":"G. Demartinis, B. Soper, J. Cook, T. Horgan, L. Horgan, C. Beaudoin, Jason C. Dickinsor, A. Gatesman","doi":"10.1109/USNC-URSI.2018.8602505","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602505","url":null,"abstract":"A prototype single-channel V-transmit V-receive (VV) frequency modulated continuous wave (FMCW) instrumentation radar operating near a center frequency of 243 GHz has been developed. The primary motivation for development of the radar is to support micro-Doppler signature measurements of moving targets at millimeter-wave frequencies. The transceiver employs a commercially available synthesizer evaluation module that directly drives both the transmitter and receiver x24 frequency multiplier assemblies. The receiver is a simple direct conversion architecture feeding a modest 5 MS/s data acquisition card or fast oscilloscope (up to 2 GS/s). The design and operation of the transceiver is presented in this paper along with measurement results of a reconfigurable multi-blade rotor assembly used to demonstrate system performance.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132236832","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
Reconstruction of Signal Waveform Received on Sea Surface Based on Kolmogorov Method 基于Kolmogorov方法的海面接收信号波形重建
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602722
Jiaxin Yao, Tao Jiang, Bin Cao
{"title":"Reconstruction of Signal Waveform Received on Sea Surface Based on Kolmogorov Method","authors":"Jiaxin Yao, Tao Jiang, Bin Cao","doi":"10.1109/USNC-URSI.2018.8602722","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602722","url":null,"abstract":"It is analyzed the reconstruction performance of time domain waveform received on the sea surface depending only on the data of frequency amplitude spectrum by using Kolmogorov method. The basic reconstruction theory is introduced briefly and the comparison between signal waveform before and after reconstruction is provided based on simulation together with feature selective verification rules.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128772546","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 One-sided IA Algorithm Based on Sum Rate Maximization for MIMO Cognitive Network 一种基于和速率最大化的单向IA算法用于MIMO认知网络
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602893
Yibing Li, Hengyu Xu, Xueying Diao, Qian Sun
{"title":"A One-sided IA Algorithm Based on Sum Rate Maximization for MIMO Cognitive Network","authors":"Yibing Li, Hengyu Xu, Xueying Diao, Qian Sun","doi":"10.1109/USNC-URSI.2018.8602893","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602893","url":null,"abstract":"This paper focuses on applying interference alignment (IA) to the cognitive radio network where secondary users (SUs) transmit their information on the same frequency band of primary users (PUs) without generating interference on the primary network. We propose an IA scheme which runs at the transmitters only. The presented scheme considers the different interfering subspaces distances, and the distances between the interfering subspaces and the desired subspace. With the aim of optimizing the information rate of the network and guaranteeing user fairness at the same time, the proposed scheme moves the precoder obtained by the subspace distance optimization along the direction given by the gradient of the sum of logarithmic user data rate. Simulation shows the effectiveness of the proposed scheme in terms of the average sum rate.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927872","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
Importance of the Antenna Model to Assess GNSS Multipath in Airport Environments 天线模型对机场环境下GNSS多路径评估的重要性
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602861
Capucine Amielh, Alexandre Chabory, C. Macabiau, L. Azoulai
{"title":"Importance of the Antenna Model to Assess GNSS Multipath in Airport Environments","authors":"Capucine Amielh, Alexandre Chabory, C. Macabiau, L. Azoulai","doi":"10.1109/USNC-URSI.2018.8602861","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602861","url":null,"abstract":"For GNSS systems, the gain, phase and group-delay patterns of the receiver antenna have an impact on the pseudo-ranges, i.e. the apparent distances to the satellites estimated by the receiver. In the presence of multipath, this impact is difficult to assess because multipath and antenna effects are mixed. In this article, these sources of pseudo-range error are analyzed by means of simulations for an aircraft moving at the surface of an airport. For the simulations, we rely on a hybrid statistical-deterministic GNSS multipath simulator combined with a receiver simulator. Various antenna models are tested, e.g. an ideal isotropic antenna and a realistic antenna mounted on an aircraft, with and without the phase and group-delay patterns.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121143751","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: 3
Near-Field Gain Measurements Using the Distance Averaging Method: Linear Scanning Versus Matrix Scanning 使用距离平均法的近场增益测量:线性扫描与矩阵扫描
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602746
L. Anchidin, R. Tamas, G. Caruntu, C. Ilie
{"title":"Near-Field Gain Measurements Using the Distance Averaging Method: Linear Scanning Versus Matrix Scanning","authors":"L. Anchidin, R. Tamas, G. Caruntu, C. Ilie","doi":"10.1109/USNC-URSI.2018.8602746","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602746","url":null,"abstract":"Antenna gain can be measured in a multipath site by moving the antenna under test away from the probe antenna at different distances, and by assessing a normalized transfer function as an average figure over the entire data set. In an earlier work, we provided a statistical explanation to the reduction of the multipath effects. Another possible explanation is based on the synthetic aperture principle, by assimilating the set of positions of the probe antenna to an antenna array. In this paper, we compare linear scanning to matrix scanning in order to draw optimal choice criteria for the grid of measuring positions. Measurements were performed on a Vivaldi antenna, in the near-field zone.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124427838","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: 3
Spatial Data Focusing: An Alternative to Beamforming for Geocasting Scenarios 空间数据聚焦:地理投射场景波束成形的替代方案
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602761
J. Sarrazin, Michael Odhiambo, S. Golstein, P. De Doncker, F. Horlin
{"title":"Spatial Data Focusing: An Alternative to Beamforming for Geocasting Scenarios","authors":"J. Sarrazin, Michael Odhiambo, S. Golstein, P. De Doncker, F. Horlin","doi":"10.1109/USNC-URSI.2018.8602761","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602761","url":null,"abstract":"An alternative scenario is introduced in order to overcome antenna array's beamwidth limitations due to finite aperture size. The proposed approach aims to focus the transmitted data rather than the transmitted power. This scheme enables wireless broadcast of information to specific spatial locations, using fewer antenna elements compared to classical beamforming techniques. It is shown indeed with numerical examples that focusing the data is spatially more selective than focusing the power. In particular, we show that a linear 2-antenna array using spatial data focusing can exhibit similar beamwidths to a linear 7-antenna array using power focusing.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117148399","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: 6
A Comparison of Fitting Methods for Modeling the Front Door Coupling of Two Nearby Parabolic Antennas 两个附近抛物面天线前门耦合模型拟合方法的比较
2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2018-07-01 DOI: 10.1109/USNC-URSI.2018.8602946
J. Becerra, Z. López, A. Rangel, F. Vega
{"title":"A Comparison of Fitting Methods for Modeling the Front Door Coupling of Two Nearby Parabolic Antennas","authors":"J. Becerra, Z. López, A. Rangel, F. Vega","doi":"10.1109/USNC-URSI.2018.8602946","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2018.8602946","url":null,"abstract":"In this article, we present the modeling of the front door coupling of two nearby antennas through different fitting methods. The antennas were considered as a two port network and its coupling was represented by the S21 parameter, which was obtained for diverse configurations by simulation means. The results of different fitting methods were analyzed and compared for different antennas configurations in order to determine the best fitting algorithm.","PeriodicalId":203781,"journal":{"name":"2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115523280","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: 3
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信