Pub Date : 2013-11-07DOI: 10.1109/WiSEE.2013.6737554
W. Wilson, G. Atkinson
NASA aeronautical programs require rigorous ground and flight testing. Many of the testing environments can be extremely harsh. These environments include cryogenic temperatures and high temperatures (greater than 1500°C). Temperature, pressure, vibration, ionizing radiation, and chemical exposure may all be part of the harsh environment found in testing. This paper presents a survey of research opportunities for universities and industry to develop new wireless sensors that address anticipated structural health monitoring (SHM) and testing needs for aeronautical vehicles. Potential applications of passive wireless sensors for ground testing and high altitude aircraft operations are presented. Some of the challenges and issues of the technology are also presented.
{"title":"Wireless sensor applications in extreme aeronautical environments","authors":"W. Wilson, G. Atkinson","doi":"10.1109/WiSEE.2013.6737554","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737554","url":null,"abstract":"NASA aeronautical programs require rigorous ground and flight testing. Many of the testing environments can be extremely harsh. These environments include cryogenic temperatures and high temperatures (greater than 1500°C). Temperature, pressure, vibration, ionizing radiation, and chemical exposure may all be part of the harsh environment found in testing. This paper presents a survey of research opportunities for universities and industry to develop new wireless sensors that address anticipated structural health monitoring (SHM) and testing needs for aeronautical vehicles. Potential applications of passive wireless sensors for ground testing and high altitude aircraft operations are presented. Some of the challenges and issues of the technology are also presented.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121066383","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 : 2013-11-07DOI: 10.1109/WiSEE.2013.6737541
C. Lansdowne, Glen F. Steele, J. Zucha, Adam M. Schlesinger
We describe the benefit of using closed-loop measurements for a radio receiver paired with a counterpart transmitter. We show that real-time analysis of the soft decision output of a receiver can provide rich and relevant insight far beyond the traditional hard-decision bit error rate (BER) test statistic. We describe a Soft Decision Analyzer (SDA) implementation for closed-loop measurements on single- or dual-(orthogonal) channel serial data communication links. The analyzer has been used to identify, quantify, and prioritize contributors to implementation loss in live-time during the development of software defined radios. This test technique gains importance as modern receivers are providing soft decision symbol synchronization as radio links are challenged to push more data and more protocol overhead through noisier channels, and software-defined radios (SDRs) use error-correction codes that approach Shannon's theoretical limit of performance.
{"title":"Closed-loop analysis of soft decisions for serial links","authors":"C. Lansdowne, Glen F. Steele, J. Zucha, Adam M. Schlesinger","doi":"10.1109/WiSEE.2013.6737541","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737541","url":null,"abstract":"We describe the benefit of using closed-loop measurements for a radio receiver paired with a counterpart transmitter. We show that real-time analysis of the soft decision output of a receiver can provide rich and relevant insight far beyond the traditional hard-decision bit error rate (BER) test statistic. We describe a Soft Decision Analyzer (SDA) implementation for closed-loop measurements on single- or dual-(orthogonal) channel serial data communication links. The analyzer has been used to identify, quantify, and prioritize contributors to implementation loss in live-time during the development of software defined radios. This test technique gains importance as modern receivers are providing soft decision symbol synchronization as radio links are challenged to push more data and more protocol overhead through noisier channels, and software-defined radios (SDRs) use error-correction codes that approach Shannon's theoretical limit of performance.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127824629","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 : 2013-11-07DOI: 10.1109/WiSEE.2013.6737552
R. Barton
In this paper, we apply results from multi-user information theory to study the limits of information capacity and collision resolution for SAW RFID tags. In particular, we derive bounds on the achievable data rate per tag as a function of fundamental parameters such as tag time-bandwidth product, tag signal-to-noise ratio (SNR), and number of tags in the environment. We also discuss the implications of these bounds for tag waveform design and tag interrogation efficiency.
{"title":"Some fundamental limits on SAW RFID tag information capacity and collision resolution","authors":"R. Barton","doi":"10.1109/WiSEE.2013.6737552","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737552","url":null,"abstract":"In this paper, we apply results from multi-user information theory to study the limits of information capacity and collision resolution for SAW RFID tags. In particular, we derive bounds on the achievable data rate per tag as a function of fundamental parameters such as tag time-bandwidth product, tag signal-to-noise ratio (SNR), and number of tags in the environment. We also discuss the implications of these bounds for tag waveform design and tag interrogation efficiency.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133649731","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 : 2013-11-07DOI: 10.1109/WiSEE.2013.6737553
W. Benedix, D. Plettemeier, A. Zanoni, F. Preller, V. Ciarletti
The Experiment “Water Ice and Subsurface Deposit Observations on Mars” (WISDOM) is a Ground Penetrating Radar (GPR) selected to be part of the Pasteur payload on board the rover of European Space Agency's (ESA) ExoMars 2018 mission. The GPR antenna system described in this paper is the consequent progression of former developments [1, 2] incorporating changed requirements and further optimizations. Main constraints are the mass, the temperature range as well as the ultra-wide band demand. The antenna requirements which are to fulfill for this very specific GPR application are described here. Furthermore, it is given an overview about the lightweight design and its realization. Simulated and measured antenna performance is compared in this paper.
{"title":"Advance of WISDOM GPR antenna for ExoMars 2018 mission","authors":"W. Benedix, D. Plettemeier, A. Zanoni, F. Preller, V. Ciarletti","doi":"10.1109/WiSEE.2013.6737553","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737553","url":null,"abstract":"The Experiment “Water Ice and Subsurface Deposit Observations on Mars” (WISDOM) is a Ground Penetrating Radar (GPR) selected to be part of the Pasteur payload on board the rover of European Space Agency's (ESA) ExoMars 2018 mission. The GPR antenna system described in this paper is the consequent progression of former developments [1, 2] incorporating changed requirements and further optimizations. Main constraints are the mass, the temperature range as well as the ultra-wide band demand. The antenna requirements which are to fulfill for this very specific GPR application are described here. Furthermore, it is given an overview about the lightweight design and its realization. Simulated and measured antenna performance is compared in this paper.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115596702","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 : 2013-11-01DOI: 10.1109/WiSEE.2013.6737575
Lonnie Labonte, Joel Castro, Mojtaba Razfar, A. Abedi, Ramin Rezaei, Fady Ghabrial, P. Shankar, E. Besnard
Various control applications such as aerospace vehicles and automotive control systems can benefit from lower weight and cost. Replacing wired feedback control with wireless sensor and actuator networks (WiSAN) offers attractive features by improving upon the weight and cost problems, while posing new challenges due to the delayed noisy feedback links. Addressing these challenges requires modeling and simulation of WiSAN with noise and delay implemented in the feedback path. A model with Additive White Gaussian Noise and Constant Delay (AWGN-CD) is used in this research. This study provides insight for designing WiSAN for a variety of scenarios, where weight and cost is of concern.
{"title":"Wireless sensor and actuator networks with delayed noisy feedback (WiSAN)","authors":"Lonnie Labonte, Joel Castro, Mojtaba Razfar, A. Abedi, Ramin Rezaei, Fady Ghabrial, P. Shankar, E. Besnard","doi":"10.1109/WiSEE.2013.6737575","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737575","url":null,"abstract":"Various control applications such as aerospace vehicles and automotive control systems can benefit from lower weight and cost. Replacing wired feedback control with wireless sensor and actuator networks (WiSAN) offers attractive features by improving upon the weight and cost problems, while posing new challenges due to the delayed noisy feedback links. Addressing these challenges requires modeling and simulation of WiSAN with noise and delay implemented in the feedback path. A model with Additive White Gaussian Noise and Constant Delay (AWGN-CD) is used in this research. This study provides insight for designing WiSAN for a variety of scenarios, where weight and cost is of concern.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115687459","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 : 2013-11-01DOI: 10.1109/WiSEE.2013.6737546
K. ElMahgoub, A. Elsherbeni
The effect of different shapes and grid skew angle of silver nanoparticles on the absorption of nanoplasmonic solar cell is studied using the finite-difference time-domain (FDTD). An FDTD algorithm is used to study the absorption rate of the solar cells with cuboid and cylindrical silver nanoparticles. Moreover, solar cells with axial and skewed grid of silver nanoparticles are considered. The results show that the shape of the nanoparticles affects the absorption rate of the solar cell dramatically, while the skew angle of the grid has a negligible effect.
{"title":"Analysis of nanoparticles shape for efficient absorption in nanoplasmonic solar cells","authors":"K. ElMahgoub, A. Elsherbeni","doi":"10.1109/WiSEE.2013.6737546","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737546","url":null,"abstract":"The effect of different shapes and grid skew angle of silver nanoparticles on the absorption of nanoplasmonic solar cell is studied using the finite-difference time-domain (FDTD). An FDTD algorithm is used to study the absorption rate of the solar cells with cuboid and cylindrical silver nanoparticles. Moreover, solar cells with axial and skewed grid of silver nanoparticles are considered. The results show that the shape of the nanoparticles affects the absorption rate of the solar cell dramatically, while the skew angle of the grid has a negligible effect.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134177708","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 : 2013-11-01DOI: 10.1109/WiSEE.2013.6737548
J. Fraire, P. Madoery, J. Finochietto
Delay-Tolerant Networks (DTNs) have become a promising solution for challenged communication environments. As a result, different routing schemes have been investigated that take into account the time-evolving nature of the network topology. Among them, Contact Graph Routing (CGR) has been proposed for environments with predictable connectivity. In order to evaluate routing decisions, DTN nodes need to know the contact plan in advance, which comprises all communication links among nodes that will be available in the future. Since not all potential contacts can belong to the contact plan, its design requires analyzing conflicting contacts in order to select those that meet an overall goal. In this paper, we consider the design of contact plans that can maximize fairness requirements while still maximizing the overall capacity as well. To this end, we propose to formalize the problem by means of an optimization model and evaluate its performance in terms of different fairness metrics. Since this model can be computationally intractable for a large number of contacts, we also propose to tackle it as a matching problem, resulting in algorithms of polynomial complexity, and compare these results with those of the original model. We show that fairness can be properly modeled to design contact plans and that efficient algorithms do exist to compute these plans quite accurately.
{"title":"On the design of fair contact plans in predictable Delay-Tolerant Networks","authors":"J. Fraire, P. Madoery, J. Finochietto","doi":"10.1109/WiSEE.2013.6737548","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737548","url":null,"abstract":"Delay-Tolerant Networks (DTNs) have become a promising solution for challenged communication environments. As a result, different routing schemes have been investigated that take into account the time-evolving nature of the network topology. Among them, Contact Graph Routing (CGR) has been proposed for environments with predictable connectivity. In order to evaluate routing decisions, DTN nodes need to know the contact plan in advance, which comprises all communication links among nodes that will be available in the future. Since not all potential contacts can belong to the contact plan, its design requires analyzing conflicting contacts in order to select those that meet an overall goal. In this paper, we consider the design of contact plans that can maximize fairness requirements while still maximizing the overall capacity as well. To this end, we propose to formalize the problem by means of an optimization model and evaluate its performance in terms of different fairness metrics. Since this model can be computationally intractable for a large number of contacts, we also propose to tackle it as a matching problem, resulting in algorithms of polynomial complexity, and compare these results with those of the original model. We show that fairness can be properly modeled to design contact plans and that efficient algorithms do exist to compute these plans quite accurately.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123953632","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 : 2013-11-01DOI: 10.1109/WiSEE.2013.6737560
A. Nafchi, S. Goh, S. Zekavat
This paper investigates the performance of Wireless Capsule Endoscopy (WCE) tracking within the irregular environment of digestion system by incorporating the Directional-of-Arrival (DOA), Time-of-Arrival (TOA) and Inertial Measurement Unit (IMU) measurements with the Extended Kalman Filter (EKF). The emitter sends a signal to the WCE, and the WCE replies the signal back to the antenna arrays. Then, the round trip TOA, and the DOA of the signals transmitted from the emitter to the WCE are measured. An EKF is designed to integrate the DOA, TOA and IMU measurements to improve the WCE localization. Simulations are conducted to investigate the EKF localization performance as a function of the number of antenna arrays and TOA estimation accuracy. The impact of IMU on the localization performance will also be studied. Simulations confirm the feasibility of the WCE tracking by integrating the DOA, TOA and IMU measurements with Kalman Filter.
{"title":"High performance DOA/TOA-based Endoscopy Capsule localization and tracking via 2D circular arrays and inertial measurement unit","authors":"A. Nafchi, S. Goh, S. Zekavat","doi":"10.1109/WiSEE.2013.6737560","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737560","url":null,"abstract":"This paper investigates the performance of Wireless Capsule Endoscopy (WCE) tracking within the irregular environment of digestion system by incorporating the Directional-of-Arrival (DOA), Time-of-Arrival (TOA) and Inertial Measurement Unit (IMU) measurements with the Extended Kalman Filter (EKF). The emitter sends a signal to the WCE, and the WCE replies the signal back to the antenna arrays. Then, the round trip TOA, and the DOA of the signals transmitted from the emitter to the WCE are measured. An EKF is designed to integrate the DOA, TOA and IMU measurements to improve the WCE localization. Simulations are conducted to investigate the EKF localization performance as a function of the number of antenna arrays and TOA estimation accuracy. The impact of IMU on the localization performance will also be studied. Simulations confirm the feasibility of the WCE tracking by integrating the DOA, TOA and IMU measurements with Kalman Filter.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132414191","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 : 2013-11-01DOI: 10.1109/WiSEE.2013.6737542
N. Neveu, Mauricio Garcia, Joseph Casana, R. Dettloff, D. Jackson, Ji Chen
Simple antennas such as wire whips are commonly used on CubeSats because they do not obstruct the solar panels. These are mechanically deployed and prone to failure. This paper offers several antenna solutions that address the challenges associated with launching standards and the need for solar panels. Each design aims to fit onto a face of a 3-unit (3U) CubeSat. The design frequencies are 2.4 GHz and 434 MHz for ground communication, 1.616 GHz for communication with the Iridium satellite constellation, and 900 MHz for communication between CubeSats. Based on the simulation results, three types of patch antennas were fabricated: silver mesh antennas on quartz substrates, solid patch antennas of Indium Tin Oxide (ITO) on glass substrates, and a copper slatted ring resonator antenna on RO4533 substrate.
{"title":"Transparent microstrip antennas for CubeSat applications","authors":"N. Neveu, Mauricio Garcia, Joseph Casana, R. Dettloff, D. Jackson, Ji Chen","doi":"10.1109/WiSEE.2013.6737542","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737542","url":null,"abstract":"Simple antennas such as wire whips are commonly used on CubeSats because they do not obstruct the solar panels. These are mechanically deployed and prone to failure. This paper offers several antenna solutions that address the challenges associated with launching standards and the need for solar panels. Each design aims to fit onto a face of a 3-unit (3U) CubeSat. The design frequencies are 2.4 GHz and 434 MHz for ground communication, 1.616 GHz for communication with the Iridium satellite constellation, and 900 MHz for communication between CubeSats. Based on the simulation results, three types of patch antennas were fabricated: silver mesh antennas on quartz substrates, solid patch antennas of Indium Tin Oxide (ITO) on glass substrates, and a copper slatted ring resonator antenna on RO4533 substrate.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130831020","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 : 2013-11-01DOI: 10.1109/WiSEE.2013.6737578
M. Leitgab
This paper presents a design for scaleable space solar power systems based on free-flying reflectors and module self-assembly. Lower system cost of utility-scale space solar power is achieved by design independence of yet-to-be-built in-space assembly or transportation infrastructure. Using current and expected near-term technology, this study describe a design for mid-term utility-scale power plants in geosynchronous orbits. High-level economic considerations in the context of current and expected future launch costs are given as well.
{"title":"Hypermodular self-assembling space solar power — Design option for mid-term GEO utility-scale power plants","authors":"M. Leitgab","doi":"10.1109/WiSEE.2013.6737578","DOIUrl":"https://doi.org/10.1109/WiSEE.2013.6737578","url":null,"abstract":"This paper presents a design for scaleable space solar power systems based on free-flying reflectors and module self-assembly. Lower system cost of utility-scale space solar power is achieved by design independence of yet-to-be-built in-space assembly or transportation infrastructure. Using current and expected near-term technology, this study describe a design for mid-term utility-scale power plants in geosynchronous orbits. High-level economic considerations in the context of current and expected future launch costs are given as well.","PeriodicalId":127644,"journal":{"name":"IEEE International Conference on Wireless for Space and Extreme Environments","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128125912","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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