This paper describes and confirms by measurements the principle of operation of a new patent for beam steering of array antennas. The method is particularly suitable when quick continuous beam control is needed. The patent should have the potential to allow simple technical solutions and cost-effective design and manufacturing. This is due to the fact that phase shifters-with their complex control circuitry-do not enter into the concept, and the modular structure-with equal feed circuits for each antenna element-opens for use of mass-produced HMICs. Verification measurements are shown for a transmit network in one dimension, but the method may just as well be applied in receiving mode and for two-dimensional arrays. The discussion concentrates on the main idea and principle for the feed system.<>
{"title":"Frequency controlled antenna beam steering","authors":"K. Aamo","doi":"10.1109/NTC.1994.316695","DOIUrl":"https://doi.org/10.1109/NTC.1994.316695","url":null,"abstract":"This paper describes and confirms by measurements the principle of operation of a new patent for beam steering of array antennas. The method is particularly suitable when quick continuous beam control is needed. The patent should have the potential to allow simple technical solutions and cost-effective design and manufacturing. This is due to the fact that phase shifters-with their complex control circuitry-do not enter into the concept, and the modular structure-with equal feed circuits for each antenna element-opens for use of mass-produced HMICs. Verification measurements are shown for a transmit network in one dimension, but the method may just as well be applied in receiving mode and for two-dimensional arrays. The discussion concentrates on the main idea and principle for the feed system.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124735975","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}
The coming decade will see a wide variety of large and small unmanned vehicle systems emerging from laboratories to tackle real-world applications. These systems will not only perform reconnaissance and inspection tasks, but also do real physical work, such as installing subsea completions in offshore oilfields. This paper is intended to promote an appreciation of the broad range of telerobotic systems which offer opportunities for microwave and analogous technologies to support required functions of navigation, sensing, and communication. One thrust is to identify some of the many significant dimensions of variability between different systems characterizable as "telerobotic"-dimensions which accommodate a wide variety of system concepts not yet explored. The specific details of an application's requirements-in terms of functionality, performance, and environment-sensitively affect the tradeoffs leading to an optimally cost effective system design approach.<>
{"title":"Telerobotic requirements for sensing, navigation, and communications","authors":"D. Gage","doi":"10.1109/NTC.1994.316672","DOIUrl":"https://doi.org/10.1109/NTC.1994.316672","url":null,"abstract":"The coming decade will see a wide variety of large and small unmanned vehicle systems emerging from laboratories to tackle real-world applications. These systems will not only perform reconnaissance and inspection tasks, but also do real physical work, such as installing subsea completions in offshore oilfields. This paper is intended to promote an appreciation of the broad range of telerobotic systems which offer opportunities for microwave and analogous technologies to support required functions of navigation, sensing, and communication. One thrust is to identify some of the many significant dimensions of variability between different systems characterizable as \"telerobotic\"-dimensions which accommodate a wide variety of system concepts not yet explored. The specific details of an application's requirements-in terms of functionality, performance, and environment-sensitively affect the tradeoffs leading to an optimally cost effective system design approach.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121635586","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}
A new architecture for spatial power combining is presented. This design addresses the issues of high reliability/thermal management, maximizing combining efficiency, and maximizing graceful degradation. The design has been tested with the construction of a brassboard 4-by-4 subarray at 10 GHz. The measured results show an EIRP of 25.0 dBW (315 W), output power greater than 4 W, and a DC-to-RF conversion efficiency greater than 18%. The spatial power-combined transmitter described in this paper is designed to feed a reflector antenna.<>
{"title":"A hybrid-circuit tile-approach architecture for high-power spatial power-combined transmitters","authors":"M. Gouker, R. Beaudette, J. T. Delisle","doi":"10.1109/NTC.1994.316696","DOIUrl":"https://doi.org/10.1109/NTC.1994.316696","url":null,"abstract":"A new architecture for spatial power combining is presented. This design addresses the issues of high reliability/thermal management, maximizing combining efficiency, and maximizing graceful degradation. The design has been tested with the construction of a brassboard 4-by-4 subarray at 10 GHz. The measured results show an EIRP of 25.0 dBW (315 W), output power greater than 4 W, and a DC-to-RF conversion efficiency greater than 18%. The spatial power-combined transmitter described in this paper is designed to feed a reflector antenna.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134228607","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}
The radar imagery generator (RIG) is a simulation system for creating synthetic aperture radar (SAR) and inverse SAR (ISAR) images. It is being used for operator training, radar design studies, low-observable target design, and target detection and recognition analysis. RIG is a validated simulation, based on a first-principles radar scattering model.<>
{"title":"The radar imagery generator","authors":"P. Burnett","doi":"10.1109/NTC.1994.316689","DOIUrl":"https://doi.org/10.1109/NTC.1994.316689","url":null,"abstract":"The radar imagery generator (RIG) is a simulation system for creating synthetic aperture radar (SAR) and inverse SAR (ISAR) images. It is being used for operator training, radar design studies, low-observable target design, and target detection and recognition analysis. RIG is a validated simulation, based on a first-principles radar scattering model.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131258435","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}
During 1993, two active array radar antennas were delivered to a European Consortium. COBRA (counter battery radar) is designed to acquire, track, and provide impact predictions for rockets, mortar and common projectiles. Lessons learned on this 3000 solid-state T/R module COBRA system are described.<>
{"title":"COBRA-lessons learned","authors":"R.F. Kolc, S.E. Ozga","doi":"10.1109/NTC.1994.316701","DOIUrl":"https://doi.org/10.1109/NTC.1994.316701","url":null,"abstract":"During 1993, two active array radar antennas were delivered to a European Consortium. COBRA (counter battery radar) is designed to acquire, track, and provide impact predictions for rockets, mortar and common projectiles. Lessons learned on this 3000 solid-state T/R module COBRA system are described.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115557239","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}
The growing demand for high capacity transmission in digital radio systems (DRS) has led to the adoption of a highly spectral efficient system comprising cochannel operation and multilevel QAM. Due to the vulnerability of such a system to the channel conditions, great efforts have been made on counteracting multipath fading and depolarization. The authors propose a powerful multitask chip with 150 K gate array for DRS. This chip was implemented with state of the art 0.6 /spl mu/ HCMOS technology and was designed to be used not only as an equalizer for multipath fading and a canceller for cochannel operation, but also as a digital filter for pulse shaping in modems using up to 1024-QAM or TCM. The performance of cochannel of 64-QAM DRS combined with digital slope equalizer is presented.<>
{"title":"A powerful 13-tap ATDE and XPIC implemented on one chip for co-channel digital radio system","authors":"K. Suh, Chang-Yong Park, G. Hur, Dae-Young Lee","doi":"10.1109/NTC.1994.316661","DOIUrl":"https://doi.org/10.1109/NTC.1994.316661","url":null,"abstract":"The growing demand for high capacity transmission in digital radio systems (DRS) has led to the adoption of a highly spectral efficient system comprising cochannel operation and multilevel QAM. Due to the vulnerability of such a system to the channel conditions, great efforts have been made on counteracting multipath fading and depolarization. The authors propose a powerful multitask chip with 150 K gate array for DRS. This chip was implemented with state of the art 0.6 /spl mu/ HCMOS technology and was designed to be used not only as an equalizer for multipath fading and a canceller for cochannel operation, but also as a digital filter for pulse shaping in modems using up to 1024-QAM or TCM. The performance of cochannel of 64-QAM DRS combined with digital slope equalizer is presented.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127372232","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}
Significant changes are coming to the communication, navigation and surveillance (CNS) systems on board civil transport aircraft. Initiatives such as the International Civil Aviation Organization (ICAO) Future Air Navigation System (FANS) and those of other national and inter-governmental agencies, such as the U.S. Federal Aviation Administration (FAA) and Eurocontrol will mandate that these be based on satellite technologies. The paper examines how these technologies will be integrated on one of the most advanced flight decks in commercial aviation, the MD-11, and explores some of the issues raised.<>
{"title":"MD-11 FANS implementation","authors":"G. Sandell, R. Hester","doi":"10.1109/NTC.1994.316664","DOIUrl":"https://doi.org/10.1109/NTC.1994.316664","url":null,"abstract":"Significant changes are coming to the communication, navigation and surveillance (CNS) systems on board civil transport aircraft. Initiatives such as the International Civil Aviation Organization (ICAO) Future Air Navigation System (FANS) and those of other national and inter-governmental agencies, such as the U.S. Federal Aviation Administration (FAA) and Eurocontrol will mandate that these be based on satellite technologies. The paper examines how these technologies will be integrated on one of the most advanced flight decks in commercial aviation, the MD-11, and explores some of the issues raised.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130841680","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}
Summary form only given, as follows. The global positioning system (GPS) provides continuous, worldwide position and timing information. As the user base for this service grows, ensuring the quality of future maintenance modifications and developmental upgrades becomes more important. To address this need, a GPS weapon support system (WSS) is being developed. The GPS WSS will support lifecycle activities including system analysis, software engineering, hardware engineering, test and integration, and associated management. In order to support these activities, the WSS will provide a variety of emulation and simulation environments for analysis, testing, and long range planning.<>
{"title":"Simulation in support of GPS quality assurance","authors":"M. Schultz","doi":"10.1109/NTC.1994.316649","DOIUrl":"https://doi.org/10.1109/NTC.1994.316649","url":null,"abstract":"Summary form only given, as follows. The global positioning system (GPS) provides continuous, worldwide position and timing information. As the user base for this service grows, ensuring the quality of future maintenance modifications and developmental upgrades becomes more important. To address this need, a GPS weapon support system (WSS) is being developed. The GPS WSS will support lifecycle activities including system analysis, software engineering, hardware engineering, test and integration, and associated management. In order to support these activities, the WSS will provide a variety of emulation and simulation environments for analysis, testing, and long range planning.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133393870","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}
The Jet Propulsion Laboratory (JPL) has begun the development of a broadband aeronautical terminal (BAT) for duplex video satellite communications on a variety of aircraft. The BAT is designed exclusively for use with NASA's K/Ka-band Advanced Communications Technology Satellite (ACTS). In the article the overall BAT system and the experiments currently planned for its demonstration are overviewed. Examples of how such a system may first be introduced as a commercial product are given. Functional descriptions of the BAT subsystems are given, with an emphasis on the antenna. The capabilities of the ACTS satellite that the BAT system will utilize are summarized.<>
{"title":"NASA's K/Ka-band broadband aeronautical terminal for duplex satellite video communications","authors":"M. Agan, A. Densmore","doi":"10.1109/NTC.1994.316667","DOIUrl":"https://doi.org/10.1109/NTC.1994.316667","url":null,"abstract":"The Jet Propulsion Laboratory (JPL) has begun the development of a broadband aeronautical terminal (BAT) for duplex video satellite communications on a variety of aircraft. The BAT is designed exclusively for use with NASA's K/Ka-band Advanced Communications Technology Satellite (ACTS). In the article the overall BAT system and the experiments currently planned for its demonstration are overviewed. Examples of how such a system may first be introduced as a commercial product are given. Functional descriptions of the BAT subsystems are given, with an emphasis on the antenna. The capabilities of the ACTS satellite that the BAT system will utilize are summarized.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129164790","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}
Most efficient for remote cooperative targets telesystems are radio frequency localization (RFLO) and RF identification (RFID) methods. Passive RFLO systems are analyzed and their optimal operation range is computed. For operation ranges exceeding 1 km RFLO systems using active transponders are still mandatory. A novel RFID system development is described and its 100 m range operation is enhanced by using a small battery in the transponder. New methods for improving RFLO and RFID operation range, efficiency and reliability are presented.<>
{"title":"Transponders for the detection and identification of remote cooperative targets","authors":"J. Gavan","doi":"10.1109/NTC.1994.316656","DOIUrl":"https://doi.org/10.1109/NTC.1994.316656","url":null,"abstract":"Most efficient for remote cooperative targets telesystems are radio frequency localization (RFLO) and RF identification (RFID) methods. Passive RFLO systems are analyzed and their optimal operation range is computed. For operation ranges exceeding 1 km RFLO systems using active transponders are still mandatory. A novel RFID system development is described and its 100 m range operation is enhanced by using a small battery in the transponder. New methods for improving RFLO and RFID operation range, efficiency and reliability are presented.<<ETX>>","PeriodicalId":297184,"journal":{"name":"Proceedings of IEEE National Telesystems Conference - NTC '94","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131922831","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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