Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046227
Nico Weiss, Alexander Koelpin, Irina Wiemann, Eberhard Schluecker
Liquid organic hydrogen carriers are a promising candidate to reduce the risk of handling hydrogen. However, the determination of their hydrogenation is still the subject of research. In this paper, a novel method for measuring hydrogen loading based on the permittivity of the hydrogen carriers used is presented. The cavity resonator developed for this application is shown and the design decisions made as well as the processing required are explained. Finally, the results of the test measurements are presented and discussed.
{"title":"A novel method for determining the degree of hydrogen loading of LOHC using cavity based permittivity measurements","authors":"Nico Weiss, Alexander Koelpin, Irina Wiemann, Eberhard Schluecker","doi":"10.1109/WiSNeT56959.2023.10046227","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046227","url":null,"abstract":"Liquid organic hydrogen carriers are a promising candidate to reduce the risk of handling hydrogen. However, the determination of their hydrogenation is still the subject of research. In this paper, a novel method for measuring hydrogen loading based on the permittivity of the hydrogen carriers used is presented. The cavity resonator developed for this application is shown and the design decisions made as well as the processing required are explained. Finally, the results of the test measurements are presented and discussed.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115630378","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046224
K. Ogawa, Masashi Kurosaki, R. Nakamura, H. Hadama
In this paper, we propose a 2D imaging method of a drone using a millimeter wave fast chirp MIMO radar that can estimate distance and direction of arrival (DOA) simultaneously. The accuracy of DOA estimation (angular resolution) depends on the aperture length of antenna array. Therefore, in order to improve the angular resolution, we have applied the Khatri-Rao product virtual array processing which can virtually increase the aperture length of antenna array, and aimed to realize high-resolution 2D imaging of a drone. In order to investigate the effectiveness of our proposal, the measurement experiments were conducted for three types of typical commercial drones (Phantom 3, Matrice 600, Mavic pro). The experimental results showed that our proposal could improve the 2D image of each drone and make it easier to recognize the shape of drone.
{"title":"2D Imaging of a Drone Using a Millimeter-Wave Fast Chirp MIMO Radar Based on Khatri-Rao Product Virtual Array Processing","authors":"K. Ogawa, Masashi Kurosaki, R. Nakamura, H. Hadama","doi":"10.1109/WiSNeT56959.2023.10046224","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046224","url":null,"abstract":"In this paper, we propose a 2D imaging method of a drone using a millimeter wave fast chirp MIMO radar that can estimate distance and direction of arrival (DOA) simultaneously. The accuracy of DOA estimation (angular resolution) depends on the aperture length of antenna array. Therefore, in order to improve the angular resolution, we have applied the Khatri-Rao product virtual array processing which can virtually increase the aperture length of antenna array, and aimed to realize high-resolution 2D imaging of a drone. In order to investigate the effectiveness of our proposal, the measurement experiments were conducted for three types of typical commercial drones (Phantom 3, Matrice 600, Mavic pro). The experimental results showed that our proposal could improve the 2D image of each drone and make it easier to recognize the shape of drone.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114777529","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046269
Kai Braungardt, A. Diewald, Benjamin Nuss, T. Zwick
A challenge in analog radar target simulation is the simultaneous simulation of multiple targets. Since all signal modifications are achieved through dedicated analog components, these systems do not scale well with multiple targets. To improve the scalabiltity of an analog radar target simulator, a tapped delay line can be used. This architecture uses couplers to simulate multiple targets simultaneously with the same set of analog components. In this paper we present how to use and optimize the coupling factor of the couplers inside a tapped delay line architecture for analog radar target simulation.
{"title":"Optimizing the Coupling Factor of a Tapped Delay Line for Analog Radar Target Simulation","authors":"Kai Braungardt, A. Diewald, Benjamin Nuss, T. Zwick","doi":"10.1109/WiSNeT56959.2023.10046269","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046269","url":null,"abstract":"A challenge in analog radar target simulation is the simultaneous simulation of multiple targets. Since all signal modifications are achieved through dedicated analog components, these systems do not scale well with multiple targets. To improve the scalabiltity of an analog radar target simulator, a tapped delay line can be used. This architecture uses couplers to simulate multiple targets simultaneously with the same set of analog components. In this paper we present how to use and optimize the coupling factor of the couplers inside a tapped delay line architecture for analog radar target simulation.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123648318","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046219
Anas Alsoliman, Forough Shirin Abkenar, M. Levorato
In 5G systems, ultra-reliable low latency communication (URLLC) services are expected to support an end-to-end latency of up to 5ms, while guaranteeing a minimum of 99.999% packet delivery reliability. Providing such strict service requirements is potentially difficult. As a solution, the 5G standard suggests taking advantage of the packet duplication strategy whereby two data sessions are established between one or two base stations and the node running the URLLC service. However, the technical specifications of the duplication strategy are not addressed by the standard, and thus, its implementation is left up to the mobile network operators. In this paper, we propose a state-recovery protocol for URLLC applications that assists packet-duplication frameworks by recovering the state of transmitted packets in the case of acknowledgment loss. Based on such state information, packet-duplication frameworks can intelligently control the duplication rate to provide URLLC-level reliability while using as little resource as possible based on the current network conditions. We validate our protocol through multiple experiments on srsRAN nodes implemented on Colosseum, the world's largest radio frequency emulator.
{"title":"State-Recovery Protocol for URLLC Applications in 5G Systems","authors":"Anas Alsoliman, Forough Shirin Abkenar, M. Levorato","doi":"10.1109/WiSNeT56959.2023.10046219","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046219","url":null,"abstract":"In 5G systems, ultra-reliable low latency communication (URLLC) services are expected to support an end-to-end latency of up to 5ms, while guaranteeing a minimum of 99.999% packet delivery reliability. Providing such strict service requirements is potentially difficult. As a solution, the 5G standard suggests taking advantage of the packet duplication strategy whereby two data sessions are established between one or two base stations and the node running the URLLC service. However, the technical specifications of the duplication strategy are not addressed by the standard, and thus, its implementation is left up to the mobile network operators. In this paper, we propose a state-recovery protocol for URLLC applications that assists packet-duplication frameworks by recovering the state of transmitted packets in the case of acknowledgment loss. Based on such state information, packet-duplication frameworks can intelligently control the duplication rate to provide URLLC-level reliability while using as little resource as possible based on the current network conditions. We validate our protocol through multiple experiments on srsRAN nodes implemented on Colosseum, the world's largest radio frequency emulator.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116493114","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046235
Christian Dorn, Andreas Depold, F. Lurz, Amelie Hagelauer
Systems that rely on high-level software share the same disadvantage. Their execution time is unknown and thus the result of the processing is not available after a deterministic delay. The same is valid for software-defined radios. When only in receive (RX) mode the impact of the varying delay is negligible most of the time. However, in the case that the SDR needs to transmit (TX) this delay prevents from synchronizing the TX to the RX. This is crucial for many applications in communication and sensing though. This publication proposes and implements a method on a low-cost SDR transceiver, that provides the possibility to TX at a given time related to the RX with an error of ±l sample.
{"title":"Low-cost Software-Defined Radio System with Deterministic RX to TX Delay Using Timestamps","authors":"Christian Dorn, Andreas Depold, F. Lurz, Amelie Hagelauer","doi":"10.1109/WiSNeT56959.2023.10046235","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046235","url":null,"abstract":"Systems that rely on high-level software share the same disadvantage. Their execution time is unknown and thus the result of the processing is not available after a deterministic delay. The same is valid for software-defined radios. When only in receive (RX) mode the impact of the varying delay is negligible most of the time. However, in the case that the SDR needs to transmit (TX) this delay prevents from synchronizing the TX to the RX. This is crucial for many applications in communication and sensing though. This publication proposes and implements a method on a low-cost SDR transceiver, that provides the possibility to TX at a given time related to the RX with an error of ±l sample.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134628898","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046264
Tobias Müller, Sebastian Durst, Pascal Marquardt, S. Brüggenwirth
An intelligent radar resource management is an essential building block of any modern radar system. The quality of service based resource allocation model (Q-RAM) provides a framework for profound and quantifiable decision-making but lacks a representation of inter-task dependencies that can e.g. arise for tracking and synchronisation tasks. As a consequence, synchronisation is usually performed in fixed non-optimal patterns. We present an extension of Q-RAM which enables the resource allocation to consider complex inter-task dependencies and can produce adaptive and intelligent synchronisation schemes. The provided experimental results demonstrate a significant improvement over traditional strategies.
{"title":"Quality of service based radar resource management for synchronisation problems","authors":"Tobias Müller, Sebastian Durst, Pascal Marquardt, S. Brüggenwirth","doi":"10.1109/WiSNeT56959.2023.10046264","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046264","url":null,"abstract":"An intelligent radar resource management is an essential building block of any modern radar system. The quality of service based resource allocation model (Q-RAM) provides a framework for profound and quantifiable decision-making but lacks a representation of inter-task dependencies that can e.g. arise for tracking and synchronisation tasks. As a consequence, synchronisation is usually performed in fixed non-optimal patterns. We present an extension of Q-RAM which enables the resource allocation to consider complex inter-task dependencies and can produce adaptive and intelligent synchronisation schemes. The provided experimental results demonstrate a significant improvement over traditional strategies.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129837187","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046209
R. T. Clark, Andrew W Engel, Trey E. Shenk, D. Sheen
Indoor geolocation of radio frequency (RF) transmitters is challenging due to site-specific multipath effects, especially when the sources are uncooperative. A source being uncooperative means that a-priori the transmit time, location, and power are unknown. It is proposed to use a site-specific ray tracing model to generate realistic indoor RF responses, perform geolocation using multiple methods, and compare their performance. This work will look at two types of geolocation algorithms: (1) time-difference of arrival (TDOA) and (2) received signal strength Indicator (RSSI) fingerprinting or pattern-matching-based methods. An indoor space will be simulated with a grid of fixed receivers and a grid of transmit locations using Remcom's Wireless InSite. Using the output of the Wireless InSite simulation the response from any given transmit location can be generated and used to evaluate geolocation performance.
{"title":"Indoor Wireless Localization of Uncooperative Sources Using a Ray Tracing Model","authors":"R. T. Clark, Andrew W Engel, Trey E. Shenk, D. Sheen","doi":"10.1109/WiSNeT56959.2023.10046209","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046209","url":null,"abstract":"Indoor geolocation of radio frequency (RF) transmitters is challenging due to site-specific multipath effects, especially when the sources are uncooperative. A source being uncooperative means that a-priori the transmit time, location, and power are unknown. It is proposed to use a site-specific ray tracing model to generate realistic indoor RF responses, perform geolocation using multiple methods, and compare their performance. This work will look at two types of geolocation algorithms: (1) time-difference of arrival (TDOA) and (2) received signal strength Indicator (RSSI) fingerprinting or pattern-matching-based methods. An indoor space will be simulated with a grid of fixed receivers and a grid of transmit locations using Remcom's Wireless InSite. Using the output of the Wireless InSite simulation the response from any given transmit location can be generated and used to evaluate geolocation performance.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114891325","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046230
Max Vasconcelos, Prateek Nallabolu, Changzhi Li
In order to achieve good range resolution and accuracy on frequency-modulated continuous-wave (FMCW) radars, highly linear chirps are necessary. Voltage-controlled oscillators (V COs) present nonlinearities in their tuning curve. Then, once VCOs are a fundamental building block in many continuous-wave radar systems, these nonlinearities translate into negative effects in terms of range resolution performance. A common approach to generating linear tuning curves is to connect the system VCO to a phase-locked loop (PLL). Although, PLLs increase the system complexity and cost. This work presents a way to improve the range resolution in a portable and low-cost C-band FMCW radar system. The radar VCO is driven by a microcontroller that applies a customized waveform developed to compensate for the nonlinear behavior to achieve such results.
{"title":"Range Resolution Improvement in FMCW Radar Through VCO's Nonlinearity Compensation","authors":"Max Vasconcelos, Prateek Nallabolu, Changzhi Li","doi":"10.1109/WiSNeT56959.2023.10046230","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046230","url":null,"abstract":"In order to achieve good range resolution and accuracy on frequency-modulated continuous-wave (FMCW) radars, highly linear chirps are necessary. Voltage-controlled oscillators (V COs) present nonlinearities in their tuning curve. Then, once VCOs are a fundamental building block in many continuous-wave radar systems, these nonlinearities translate into negative effects in terms of range resolution performance. A common approach to generating linear tuning curves is to connect the system VCO to a phase-locked loop (PLL). Although, PLLs increase the system complexity and cost. This work presents a way to improve the range resolution in a portable and low-cost C-band FMCW radar system. The radar VCO is driven by a microcontroller that applies a customized waveform developed to compensate for the nonlinear behavior to achieve such results.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124779435","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046220
Masashi Kurosaki, K. Ogawa, R. Nakamura, Keiji Jimi, H. Hadama
In this research, we experimentally investigated the detection of multiple drones employing a millimeter-wave fast chirp radar with MIMO configuration. The fast chirp radar can estimate not only the target distance but also the relative velocity (Doppler). Furthermore, it is possible to estimate the angle of arrival of the target by installing multiple transmitting and receiving antennas on the radar. Measurement experiments were carried out with two drones (Mavic pro, Mavic mini). The measurement results showed that the radar could detect not only the unique echoes from each drone but also the micro-Doppler due to the rotor blades, simultaneously. We also confirmed that the locations of the two drones could be detected on the range-angle map.
{"title":"Experimental Study on Multiple Drone Detection Using a Millimeter-Wave Fast Chirp MIMO Radar","authors":"Masashi Kurosaki, K. Ogawa, R. Nakamura, Keiji Jimi, H. Hadama","doi":"10.1109/WiSNeT56959.2023.10046220","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046220","url":null,"abstract":"In this research, we experimentally investigated the detection of multiple drones employing a millimeter-wave fast chirp radar with MIMO configuration. The fast chirp radar can estimate not only the target distance but also the relative velocity (Doppler). Furthermore, it is possible to estimate the angle of arrival of the target by installing multiple transmitting and receiving antennas on the radar. Measurement experiments were carried out with two drones (Mavic pro, Mavic mini). The measurement results showed that the radar could detect not only the unique echoes from each drone but also the micro-Doppler due to the rotor blades, simultaneously. We also confirmed that the locations of the two drones could be detected on the range-angle map.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129757402","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}
Pub Date : 2023-01-22DOI: 10.1109/WiSNeT56959.2023.10046238
Andreas Depold, Christian Dorn, R. Weigel, F. Lurz
This paper presents a simple, low-cost synchronization system based on a Sub-GHz of-the-shelf transceiver. It is intended for synchronization between a base station and mobile measurement system for search and rescue applications. Time critical scheduling information can be transmitted together with triggering pulses. Additionally, during off time bulk data can be transmitted. The system allows for triggering with a known latency and with a standard deviation below 200 ns.
{"title":"A Simple Low Jitter Wireless Triggering and Unidirectional Communication System","authors":"Andreas Depold, Christian Dorn, R. Weigel, F. Lurz","doi":"10.1109/WiSNeT56959.2023.10046238","DOIUrl":"https://doi.org/10.1109/WiSNeT56959.2023.10046238","url":null,"abstract":"This paper presents a simple, low-cost synchronization system based on a Sub-GHz of-the-shelf transceiver. It is intended for synchronization between a base station and mobile measurement system for search and rescue applications. Time critical scheduling information can be transmitted together with triggering pulses. Additionally, during off time bulk data can be transmitted. The system allows for triggering with a known latency and with a standard deviation below 200 ns.","PeriodicalId":186233,"journal":{"name":"2023 IEEE Topical Conference on Wireless Sensors and Sensor Networks","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130077573","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：