Pub Date : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174186
Christopher Lamprecht, P. Bekhrad, H. Ivanov, E. Leitgeb
Various atmospheric effects have a negative influence on optical signals, especially in the troposphere, which must be taken into account in free space optical (FSO) communication systems. To obtain a quantitative estimate of these effects, different mathematical models are used, often based on empirical data from around the world. The main problem with existing models is the limited accuracy, due to the different meteorological conditions at different locations on earth. We propose a new approach of modelling the refractive index structure parameter using residual neural networks (ResNets). New models, tailored to the meteorological conditions at any place on earth, can be easily created, which yields in a more accurate estimation of the refractive index profile.
{"title":"Modelling the Refractive Index Structure Parameter: A ResNet Approach","authors":"Christopher Lamprecht, P. Bekhrad, H. Ivanov, E. Leitgeb","doi":"10.1109/CoBCom49975.2020.9174186","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174186","url":null,"abstract":"Various atmospheric effects have a negative influence on optical signals, especially in the troposphere, which must be taken into account in free space optical (FSO) communication systems. To obtain a quantitative estimate of these effects, different mathematical models are used, often based on empirical data from around the world. The main problem with existing models is the limited accuracy, due to the different meteorological conditions at different locations on earth. We propose a new approach of modelling the refractive index structure parameter using residual neural networks (ResNets). New models, tailored to the meteorological conditions at any place on earth, can be easily created, which yields in a more accurate estimation of the refractive index profile.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114297563","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174061
Marsida Ibro, G. Marinova
This paper analyses the impact on power consumption when the Dynamic Voltage and Frequency Scaling (DVFS) technique is implemented on a SoC Zynq 7000 device. The usage of the DVFS technique allows the hardware IP Core design to reduce the typical power consumption. The main concern is about static and dynamic power consumption reduction by selecting the right CPU clock frequency using the DVFS technique. Several wide-ranging power consumption reduction techniques usually disregard the operating characteristics. Subsequently, we present in this paper, not only the hardware design and the operating characteristics but also the needed measurements for different operation modes to enhance the design for power consumption efficiency. Most of the experiments are conducted on the processing unit, whereas the CPU clock frequency and input voltage for Programmable Logic (PL) systems are altered. The empirical results from the application of the DVFS technique indicate that the worst scenario is when the input voltage supply for PL and CPU clock frequency have the maximum values. The best scenario for this design is when the CPU clock frequency is highest and the input voltage supply for PL is minimal, where the measurements for power consumption, especially for dynamic power consumption show that the value is reduced by additional 3%.
{"title":"DVFS Technique on a Zynq SoC-based System for Low Power Consumption","authors":"Marsida Ibro, G. Marinova","doi":"10.1109/CoBCom49975.2020.9174061","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174061","url":null,"abstract":"This paper analyses the impact on power consumption when the Dynamic Voltage and Frequency Scaling (DVFS) technique is implemented on a SoC Zynq 7000 device. The usage of the DVFS technique allows the hardware IP Core design to reduce the typical power consumption. The main concern is about static and dynamic power consumption reduction by selecting the right CPU clock frequency using the DVFS technique. Several wide-ranging power consumption reduction techniques usually disregard the operating characteristics. Subsequently, we present in this paper, not only the hardware design and the operating characteristics but also the needed measurements for different operation modes to enhance the design for power consumption efficiency. Most of the experiments are conducted on the processing unit, whereas the CPU clock frequency and input voltage for Programmable Logic (PL) systems are altered. The empirical results from the application of the DVFS technique indicate that the worst scenario is when the input voltage supply for PL and CPU clock frequency have the maximum values. The best scenario for this design is when the CPU clock frequency is highest and the input voltage supply for PL is minimal, where the measurements for power consumption, especially for dynamic power consumption show that the value is reduced by additional 3%.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114620874","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174070
P. Mandl, P. Pezzei, E. Leitgeb
Current trends show that the demand for Internet bandwidth, especially regarding mobile end devices, is increasing significantly and will continue with an exponential growth in the future. In this regard, it is necessary to provide new technologies to meet the bandwidth requirements. In particular, the technology standard 5G and others are being promoted and realised worldwide, which rises a public discussion regarding the relevant non-ionizing electromagnetic radiation exposure for the population. In view of this field of tension, this publication presents a comparison of the non-ionizing electromagnetic radiation exposure between mobile radio transmitters, state of the art TV broadcast transmitters like DVB-T2 and WLAN base stations as part of long-term measurements. In particular, the different power flux densities of the technologies mentioned are measured, compared and also discussed with regard to the legal framework and limits.
{"title":"Comparison of Radiation Exposure between DVBT2, WLAN, 5G and other Sources with Respect to Law and Regulation Issues","authors":"P. Mandl, P. Pezzei, E. Leitgeb","doi":"10.1109/CoBCom49975.2020.9174070","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174070","url":null,"abstract":"Current trends show that the demand for Internet bandwidth, especially regarding mobile end devices, is increasing significantly and will continue with an exponential growth in the future. In this regard, it is necessary to provide new technologies to meet the bandwidth requirements. In particular, the technology standard 5G and others are being promoted and realised worldwide, which rises a public discussion regarding the relevant non-ionizing electromagnetic radiation exposure for the population. In view of this field of tension, this publication presents a comparison of the non-ionizing electromagnetic radiation exposure between mobile radio transmitters, state of the art TV broadcast transmitters like DVB-T2 and WLAN base stations as part of long-term measurements. In particular, the different power flux densities of the technologies mentioned are measured, compared and also discussed with regard to the legal framework and limits.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123338826","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174183
P. J. Gripeos, H. Nistazakis, G. D. Roumelas, V. Christofilakis, A. Tsigopoulos, G. Tombras
In recent years, the increasing research and commercial interest for FSO communication systems has included them among the popular and effective communication technologies worldwide. Nevertheless, the main drawback of the terrestrial FSO links is related to the randomly time-varying atmospheric characteristics. In this work, the joint influence of time jitter effect and weak atmospheric turbulence, modeled with the gamma distribution, at the average BER performance of serially relayed Decode-and-Forward terrestrial FSO links, is investigated for two typical modulation schemes, i.e. OOK and PAM. The scope of this work is to extract accurate closed-form mathematical expressions for the system’s performance estimation. Furthermore, the corresponding numerical results are presented for various typical FSO parameter values.
{"title":"DF Relayed OOK and PAM FSO Links with Turbulence and Time Jitter","authors":"P. J. Gripeos, H. Nistazakis, G. D. Roumelas, V. Christofilakis, A. Tsigopoulos, G. Tombras","doi":"10.1109/CoBCom49975.2020.9174183","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174183","url":null,"abstract":"In recent years, the increasing research and commercial interest for FSO communication systems has included them among the popular and effective communication technologies worldwide. Nevertheless, the main drawback of the terrestrial FSO links is related to the randomly time-varying atmospheric characteristics. In this work, the joint influence of time jitter effect and weak atmospheric turbulence, modeled with the gamma distribution, at the average BER performance of serially relayed Decode-and-Forward terrestrial FSO links, is investigated for two typical modulation schemes, i.e. OOK and PAM. The scope of this work is to extract accurate closed-form mathematical expressions for the system’s performance estimation. Furthermore, the corresponding numerical results are presented for various typical FSO parameter values.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129968847","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174188
D. Dolenc, J. Turk, M. Pustišek
The scope of the existing distributed ledger technologies is divergent in terms of technological features, as well as in their acceptance among the user and developer communities. In this paper, we propose a set of diverse criteria for the evaluation of a distributed ledger ecosystem, which does not focus only on the technological aspects of viable solutions. They also consider decentralized application development perspective and sustainability of its use. We provide a brief overview of some of the alternative distributed ledger ecosystems for the development and deployment of business and IoT decentralized applications. The set of investigated technologies and networks includes Ethereum, Hyperledger, Hedera Hashgraph, EOS, Corda, IOTA, and Multichain.
{"title":"Distributed Ledger Technologies for IoT and Business DApps","authors":"D. Dolenc, J. Turk, M. Pustišek","doi":"10.1109/CoBCom49975.2020.9174188","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174188","url":null,"abstract":"The scope of the existing distributed ledger technologies is divergent in terms of technological features, as well as in their acceptance among the user and developer communities. In this paper, we propose a set of diverse criteria for the evaluation of a distributed ledger ecosystem, which does not focus only on the technological aspects of viable solutions. They also consider decentralized application development perspective and sustainability of its use. We provide a brief overview of some of the alternative distributed ledger ecosystems for the development and deployment of business and IoT decentralized applications. The set of investigated technologies and networks includes Ethereum, Hyperledger, Hedera Hashgraph, EOS, Corda, IOTA, and Multichain.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"AES-22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126556536","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174088
Mertkan Akkoç, B. Canberk
Software-Defined Networking (SDN) is a promising technology for 5G thanks to the separation of data plane and control plane. However, especially in ultra-dense scenarios, as a result of the centrality of the SDN controller, the response time increases with the ultra high spiky demands of the in-coming heterogeneous flows. This sudden increase causes an uncontrollable rise in end-to-end (e2e) latency and drop rate in the controller. Moreover, this also leads to an unbalanced QoS provisioning in this heterogeneous flow management. To tackle these challenges, in this paper, we propose a Flow-Aware QoS Engine by considering both huge flow demands and QoS requirements of different 5G flows (URLLC, eMBB, mMTC). This novel QoS-based engine contains two steps in a single controller: The Admission Management and The Priority Management. In admission management, we modify the generic Loss Ratio-Based Random Early Detection Algorithm (LRED) by implementing an add-on containing the arrival rate of different flow types. In the proposed priority management, we design a tree-based priority management scheme where we dynamically assign priorities to each flow type regarding fairness. According to our thorough evaluation results, we get up to 53% lower response times, up to 58% lower e2e latencies, and up to 36% lower drop rates for three different flows in ultra-dense SDN scenarios.
{"title":"Flow-Aware QoS Engine for Ultra-Dense SDN Scenarios","authors":"Mertkan Akkoç, B. Canberk","doi":"10.1109/CoBCom49975.2020.9174088","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174088","url":null,"abstract":"Software-Defined Networking (SDN) is a promising technology for 5G thanks to the separation of data plane and control plane. However, especially in ultra-dense scenarios, as a result of the centrality of the SDN controller, the response time increases with the ultra high spiky demands of the in-coming heterogeneous flows. This sudden increase causes an uncontrollable rise in end-to-end (e2e) latency and drop rate in the controller. Moreover, this also leads to an unbalanced QoS provisioning in this heterogeneous flow management. To tackle these challenges, in this paper, we propose a Flow-Aware QoS Engine by considering both huge flow demands and QoS requirements of different 5G flows (URLLC, eMBB, mMTC). This novel QoS-based engine contains two steps in a single controller: The Admission Management and The Priority Management. In admission management, we modify the generic Loss Ratio-Based Random Early Detection Algorithm (LRED) by implementing an add-on containing the arrival rate of different flow types. In the proposed priority management, we design a tree-based priority management scheme where we dynamically assign priorities to each flow type regarding fairness. According to our thorough evaluation results, we get up to 53% lower response times, up to 58% lower e2e latencies, and up to 36% lower drop rates for three different flows in ultra-dense SDN scenarios.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133282621","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174182
N. Wakabayashi, I. Jurdana
For ships at sea, communicating with other ships or even to land-based sites has always been a very difficult task. Around 1900, the installation of wireless communication equipment on ships began. This form of communication initially used radio waves in the MF (Medium Frequency) band. Ever since it has been undergoing various technological innovations. At present, in addition to typical terrestrial communication in the VHF band, satellite communication using microwaves is also possible. Further, these forms of data communication have replaced the telegraph and telephone. Even now, however, the speed and capacity of data communication are significantly less than that of the land-based data communication network. After reviewing the situation of maritime communication, this paper studies the data communication for autonomous navigation of ships that is currently in demand focusing on remote monitoring. It appears that few instances of obtaining verification through detailed on-board data related to real-time communication have previously been possible. That being the case, the authors posit that it is worthwhile to demonstrate the feasibility of obtaining relevant verification based on actual data via a university training vessel equipped with the latest data collection system – a system that is relatively unavailable even on new, large-scale merchant ships. Particularly for digital data, maritime communication remains mainly via relatively slow and expensive narrowband satellite transmission. Though speedier and more efficient data transfer is possible through the use of simple data compression, the costs for this mode are currently prohibitively high. It is posited that economical, speedy, and efficient data transfer via data compression will increasingly become economically available for more ships in the future.
{"title":"Maritime Communications and Remote Voyage Monitoring","authors":"N. Wakabayashi, I. Jurdana","doi":"10.1109/CoBCom49975.2020.9174182","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174182","url":null,"abstract":"For ships at sea, communicating with other ships or even to land-based sites has always been a very difficult task. Around 1900, the installation of wireless communication equipment on ships began. This form of communication initially used radio waves in the MF (Medium Frequency) band. Ever since it has been undergoing various technological innovations. At present, in addition to typical terrestrial communication in the VHF band, satellite communication using microwaves is also possible. Further, these forms of data communication have replaced the telegraph and telephone. Even now, however, the speed and capacity of data communication are significantly less than that of the land-based data communication network. After reviewing the situation of maritime communication, this paper studies the data communication for autonomous navigation of ships that is currently in demand focusing on remote monitoring. It appears that few instances of obtaining verification through detailed on-board data related to real-time communication have previously been possible. That being the case, the authors posit that it is worthwhile to demonstrate the feasibility of obtaining relevant verification based on actual data via a university training vessel equipped with the latest data collection system – a system that is relatively unavailable even on new, large-scale merchant ships. Particularly for digital data, maritime communication remains mainly via relatively slow and expensive narrowband satellite transmission. Though speedier and more efficient data transfer is possible through the use of simple data compression, the costs for this mode are currently prohibitively high. It is posited that economical, speedy, and efficient data transfer via data compression will increasingly become economically available for more ships in the future.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116694093","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9174053
Klaus Kainrath, Jakob Feiner, Wilhelm Zugaj, E. Leitgeb, H. Fluehr, M. Gruber
For the integration of unmanned aircraft into civil airspace, Europe-wide harmonized regulations have been adopted which will come into force in the EU member states starting in July 2020. There are currently no specific design regulations for Unmanned Aerial Vehicles (UAVs). This also applies to the data link that is to be used initially for control and subsequently for payload, such as video feeds. In order to be able to use mobile radio technology as a data link for UAVs, it must first be investigated whether it is suitable for this purpose. To accomplish this, measurements were carried out in the air using UAVs to evaluate the signal quality at operating heights of up to 150 meters above ground. The results are discussed in this paper.
{"title":"Evaluation of data sets for mobile radio signal coverage up to 150 meters above ground","authors":"Klaus Kainrath, Jakob Feiner, Wilhelm Zugaj, E. Leitgeb, H. Fluehr, M. Gruber","doi":"10.1109/CoBCom49975.2020.9174053","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9174053","url":null,"abstract":"For the integration of unmanned aircraft into civil airspace, Europe-wide harmonized regulations have been adopted which will come into force in the EU member states starting in July 2020. There are currently no specific design regulations for Unmanned Aerial Vehicles (UAVs). This also applies to the data link that is to be used initially for control and subsequently for payload, such as video feeds. In order to be able to use mobile radio technology as a data link for UAVs, it must first be investigated whether it is suitable for this purpose. To accomplish this, measurements were carried out in the air using UAVs to evaluate the signal quality at operating heights of up to 150 meters above ground. The results are discussed in this paper.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131095355","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9173979
V. Kafedziski, Sinisha Pecov, Dimitar Tanevski
We present a Software Defined Radio (SDR) implementation of a Ground Penetrating Radar which uses much larger bandwidth than the SDR instantaneous RF bandwidth in order to increase radar resolution. It is based on the Stepped Frequency principle, where the baseband signal is an Orthogonal Frequency Division Multiplexing (OFDM) signal, transmitted in different subbands by modulating the RF stepped frequencies. Using OFDM in each subband provides faster signal transmission and simpler detection. The receive signal-to-noise ratio (SNR) is improved by repeating a number of times the transmit baseband signal before modulating each RF frequency. The random phase discontinuities between the adjacent subbands that appear when the RF frequency is changed, are removed by postprocessing the received signal. Singular value decomposition is used to remove the effects of the direct and the ground reflected waves. We perform field experiments with anti-tank mines buried in the ground. The resulting B-scans provide excellent detection and localization of the buried objects.
{"title":"USRP Implementation of a Ground Penetrating Radar Using a Combination of Stepped Frequency and OFDM Principles","authors":"V. Kafedziski, Sinisha Pecov, Dimitar Tanevski","doi":"10.1109/CoBCom49975.2020.9173979","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9173979","url":null,"abstract":"We present a Software Defined Radio (SDR) implementation of a Ground Penetrating Radar which uses much larger bandwidth than the SDR instantaneous RF bandwidth in order to increase radar resolution. It is based on the Stepped Frequency principle, where the baseband signal is an Orthogonal Frequency Division Multiplexing (OFDM) signal, transmitted in different subbands by modulating the RF stepped frequencies. Using OFDM in each subband provides faster signal transmission and simpler detection. The receive signal-to-noise ratio (SNR) is improved by repeating a number of times the transmit baseband signal before modulating each RF frequency. The random phase discontinuities between the adjacent subbands that appear when the RF frequency is changed, are removed by postprocessing the received signal. Singular value decomposition is used to remove the effects of the direct and the ground reflected waves. We perform field experiments with anti-tank mines buried in the ground. The resulting B-scans provide excellent detection and localization of the buried objects.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123015566","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 : 2020-07-01DOI: 10.1109/CoBCom49975.2020.9173975
R. Zeif, A. Hörmer, M. Kubicka, Maximilian Henkel, O. Koudelka
The PRETTY mission is a satellite mission of the European Space Agency (ESA) with the goal to demonstrate the concept of passive reflectometry with a small and cost-efficient 3U Nanosatellite. Passive reflectometry allows the characterisation of the Earth surface properties and height, by correlating direct and reflected Global Positioning System (GPS) signals. The PRETTY mission focuses on the characterisation of the surface height. The system is realized as a Software Defined Radio (SDR) with a high-gain GPS patch antenna array that receives the very weak reflected signals from Earth’s surface. The GPS patch antenna array resides on the outer surface of the satellite with direct contact to the harsh space environment. The application in space is a key factor for many requirements and design restrictions for the PRETTY GPS antenna array. This paper focuses on the various design constraints and requirements for the antenna array and describes the relations with the antenna design parameters. The paper describes the results obtained from a first single patch simulation and discusses the final antenna array architecture, simulation results and PCB design.
{"title":"A GPS Patch Antenna Array for the ESA PRETTY Nanosatellite Mission","authors":"R. Zeif, A. Hörmer, M. Kubicka, Maximilian Henkel, O. Koudelka","doi":"10.1109/CoBCom49975.2020.9173975","DOIUrl":"https://doi.org/10.1109/CoBCom49975.2020.9173975","url":null,"abstract":"The PRETTY mission is a satellite mission of the European Space Agency (ESA) with the goal to demonstrate the concept of passive reflectometry with a small and cost-efficient 3U Nanosatellite. Passive reflectometry allows the characterisation of the Earth surface properties and height, by correlating direct and reflected Global Positioning System (GPS) signals. The PRETTY mission focuses on the characterisation of the surface height. The system is realized as a Software Defined Radio (SDR) with a high-gain GPS patch antenna array that receives the very weak reflected signals from Earth’s surface. The GPS patch antenna array resides on the outer surface of the satellite with direct contact to the harsh space environment. The application in space is a key factor for many requirements and design restrictions for the PRETTY GPS antenna array. This paper focuses on the various design constraints and requirements for the antenna array and describes the relations with the antenna design parameters. The paper describes the results obtained from a first single patch simulation and discusses the final antenna array architecture, simulation results and PCB design.","PeriodicalId":442802,"journal":{"name":"2020 International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications (CoBCom)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122700043","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}
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