Advances in Radio Science最新文献_第5页

Simulation of GPS localisation based on ray tracing 基于光线追踪的GPS定位仿真

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-85-2021

Björn Friebel, M. Schweins, Nils Dreyer, T. Kürner

引用次数: 1

Analysis of large-scale UHF-RFID use-cases utilizing full-wave simulation techniques 利用全波仿真技术分析大规模超高频射频识别用例

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-127-2021

Miroslav Lach, Christian Looschen, Erwin M. Biebl

{"title":"Analysis of large-scale UHF-RFID use-cases utilizing full-wave simulation techniques","authors":"Miroslav Lach, Christian Looschen, Erwin M. Biebl","doi":"10.5194/ars-19-127-2021","DOIUrl":"https://doi.org/10.5194/ars-19-127-2021","url":null,"abstract":"Abstract. UHF-RFID is a mature and widespread technology that has the potential to increase the\u0000reliability and efficiency of processes in logistics and production environments.\u0000However, complex interference effects in indoor environments pose challenges to the implementation\u0000of reliable wireless communication systems like RFID.\u0000This work proposes a method for tag performance evaluation utilizing a coherent two-stage rating process.\u0000This enables the abstraction of physical quantities and facilitates the interpretation of tag readability.\u0000For this purpose, two well-established full-wave techniques are utilized to perform deterministic simulations\u0000of a logistical UHF-RFID use-case.\u0000The setup of large-scale simulation environments is discussed and important quantities to be considered in\u0000RFID-systems are derived.\u0000Based on the simulation results and the proposed rating method, the RFID use-case is evaluated.\u0000Results are visualized in full-3D, facilitating the identification of critical spots.\u0000Furthermore, a subsequent cross-validation of the simulation results is performed, verifying the validity of the simulation results.\u0000By performing a priori propagation analysis, issues can effectively be revealed beforehand and costly modifications\u0000after system deployment can be avoided.\u0000","PeriodicalId":45093,"journal":{"name":"Advances in Radio Science","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44648629","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

3D Contour Shaping of Buried Objects in Soil 土中埋藏物的三维轮廓成形

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-173-2021

Christian Siebauer, H. Garbe

引用次数: 0

Developing of Algorithms Monitoring Heartbeat and Respiration Rate of a Seated Person with an FMCW Radar 用FMCW雷达监测坐着人心跳和呼吸频率的算法开发

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-195-2021

Lorenz Dirksmeyer, Aly Marnach, Daniel Schmiech, A. Diewald

引用次数: 2

Method for prediction of EMI Emissions from Automotive Ethernet to Vehicle Antennas 汽车以太网对汽车天线电磁干扰的预测方法

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-139-2021

Emanuel Panholzer, Vadim Kobelski, M. Aidam, W. Franz, S. Lindenmeier

{"title":"Method for prediction of EMI Emissions from Automotive Ethernet to Vehicle Antennas","authors":"Emanuel Panholzer, Vadim Kobelski, M. Aidam, W. Franz, S. Lindenmeier","doi":"10.5194/ars-19-139-2021","DOIUrl":"https://doi.org/10.5194/ars-19-139-2021","url":null,"abstract":"Abstract. In automotive application new point-to-point (P2P) wideband\u0000communication systems e.g. Automotive Ethernet 100BASE-T1 imply an\u0000increasing effort in safeguarding its electromagnetic compatibility (EMC).\u0000The state-of-the-art EMC safeguarding process proposes a pre-compliant\u0000system level test before the vehicle level test, which may have significant\u0000variation in test results due to the different electromagnetic environment.\u0000This work presents an approach to calculate the emission signal at the\u0000vehicle antenna from the ECU output signal given by the power spectral\u0000density (PSD) of the Automotive Ethernet ECUs. The determination is\u0000performed via a transfer function which describes the coupling between the\u0000Ethernet wire harness and the antenna. This approach considers the modelling\u0000of the complex vehicle environment by the transfer function which promises\u0000the determination of an accurate emission signal before performing the\u0000vehicle level test. Further, the transfer function for a specifically EMC\u0000critical cable harness routing along the cockpit area is analyzed in more\u0000detail with a 3D simulation, which validates the chosen measurement\u0000technique of the transfer function.\u0000","PeriodicalId":45093,"journal":{"name":"Advances in Radio Science","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48372402","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

Communication Performance vs. Implementation Trade-offs of Interpolation Techniques for FFT-Based Carrier Synchronization exemplified on DVB-RCS2 以DVB-RCS2为例，基于fft载波同步的插值技术的通信性能与实现权衡

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-59-2021

Oliver Griebel, U. Wasenmüller, N. Wehn

{"title":"Communication Performance vs. Implementation Trade-offs of Interpolation Techniques for FFT-Based Carrier Synchronization exemplified on DVB-RCS2","authors":"Oliver Griebel, U. Wasenmüller, N. Wehn","doi":"10.5194/ars-19-59-2021","DOIUrl":"https://doi.org/10.5194/ars-19-59-2021","url":null,"abstract":"Abstract. Carrier synchronization is a crucial part of any wireless receiver, which is\u0000required due to frequency and phase offset. In case of transmission in a Time\u0000Division Multiple Access system the carrier synchronization has to be carried\u0000out for every burst separately. The DVB-RCS2 standard specifies a large\u0000variety of reference burst types with very limited known symbols. For each of\u0000these types a thorough exploration of different synchronization algorithms is\u0000required to find a trade-off between a good communication performance at very\u0000low Signal to Noise Ratio (SNR) and an efficient hardware implementation. A state-of-the-art algorithm for carrier synchronization is based on the so\u0000called Fast Fourier Transformation (FFT). An inherit limitation for the\u0000precision of frequency estimation is given by the FFT point size. To\u0000counteract this limitation, the FFT point size must be increased. In this\u0000paper we extensively compare two possible interpolation techniques for FFT\u0000results in three FFT-based carrier synchronization methods. These are applied\u0000to various reference burst types specified in the DVB-RCS2 standard. The\u0000trade-offs of these combinations are identified with a special focus on\u0000hardware implementation efficiency. Furthermore, we present a flexible IP\u0000core which can process the three synchronization methods in an efficient way\u0000and analyze its implementation complexity and throughput on a Xilinx Kintex\u0000FPGA.\u0000","PeriodicalId":45093,"journal":{"name":"Advances in Radio Science","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44144327","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

Reconstruction of signal phases for signals closer than the DFT frequency resolution 重建的信号相位比信号的DFT频率分辨率更接近

IF 0.4

Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-179-2021

C. Schiffer, A. Diewald

引用次数: 0

Dynamic Eigenimage Based Background and Clutter Suppression for Ultra Short-Range Radar 基于动态特征图像的超近程雷达背景和杂波抑制

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-71-2021

Matthias G. Ehrnsperger, Maximilian H. Noll, S. Punzet, U. Siart, T. Eibert

引用次数: 1

A Low-Power Squaring Circuit with Regulated Output and Improved Settling Time in 180 nm CMOS for 3–5 GHz IR-UWB Applications 一种可调输出、180度调校时间的低功耗均方电路 nm CMOS，适用于3–5 GHz IR-UWB应用

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-79-2021

Daniel Schrüfer, Jürgen Röber, T. Mai, R. Weigel

{"title":"A Low-Power Squaring Circuit with Regulated Output and Improved Settling Time in 180 nm CMOS for 3–5 GHz IR-UWB Applications","authors":"Daniel Schrüfer, Jürgen Röber, T. Mai, R. Weigel","doi":"10.5194/ars-19-79-2021","DOIUrl":"https://doi.org/10.5194/ars-19-79-2021","url":null,"abstract":"Abstract. This paper demonstrates a low-power squaring circuit for 3–5 GHz non-coherent Impulse-Radio Ultra-Wideband (IR-UWB) receivers for Pulse Position Modulation (PPM) in a low-cost 180 nm CMOS technology. The squaring, which is the key element in typical IR-UWB receivers, is performed exploiting the non-linear transfer function of a MOS transistor. For a high gain at low power consumption the transistor is biased in the moderate inversion region, where the second-order derivative of the transconductance gm and, as a result, the quadratic term in the transfer function reaches a maximum.\u0000A control loop was implemented to set the dc output voltage to a defined value and thus to allow a comparison of the squarer output signal with a defined threshold voltage, which can easily be set and adjusted (e.g. by a DAC).\u0000To speed up the settling time of the output and hence to reach higher data rates, a novel slew-rate booster is implemented at the output. Thereby, the squarer is capable of data rates of up to 15.6 Mbit s−1, which is more than two times higher compared to the circuit without the slew-rate booster, while only consuming 72.4 µW in addition.\u0000In the extracted post-layout simulations the whole circuitry consumes 724 µA at a 1.8 V power supply, resulting in a power consumption of 1.3 mW.\u0000","PeriodicalId":45093,"journal":{"name":"Advances in Radio Science","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45917088","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 MIMO Radar System based on Fractal Antenna Arrays for Level Measurement Applications 基于分形天线阵列的MIMO雷达系统在水平面测量中的应用

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Advances in Radio Science Pub Date : 2021-12-17 DOI: 10.5194/ars-19-23-2021

C. Dahl, M. Vogt, I. Rolfes

引用次数: 2