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[1992] Proceedings of the Tactical Communications Conference最新文献

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A testbed for evaluating undersampling techniques 评估欠采样技术的测试平台
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247150
R. Martin, D. Rasmussen
{"title":"A testbed for evaluating undersampling techniques","authors":"R. Martin, D. Rasmussen","doi":"10.1109/TCC.1992.247150","DOIUrl":"https://doi.org/10.1109/TCC.1992.247150","url":null,"abstract":"A testbed was designed and constructed to evaluate the performance of high-speed, wideband analog-to-digital converters (ADCs) and external track-and-hold devices for applications involving undersampling. The testbed included a digital processing board which implemented demultiplexing and digital quadrature down-conversion to generate baseband components from the ADC output signal. A data collection board provided the means to capture data and transfer it to a PC for offline processing. Analog Devices' AD9020 ADC and AD9100 external track-and-hold devices were evaluated in the testbed. Performance of the ADC device was evaluated in terms of spurious free dynamic range and linearity. A spurious free dynamic range of better than 45 dB was achieved with the 10-bit ADC sampling a carrier frequency of 72.5 MHz at a 10-MHz rate. A dynamic range of greater than 50 dB with a linearity error of less than 2 dB was measured for the same device.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116881275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Serial demodulation of an OQPSK direct sequence spread signal OQPSK直接序列扩频信号的串行解调
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247148
D. Rasmussen, G. Davis
{"title":"Serial demodulation of an OQPSK direct sequence spread signal","authors":"D. Rasmussen, G. Davis","doi":"10.1109/TCC.1992.247148","DOIUrl":"https://doi.org/10.1109/TCC.1992.247148","url":null,"abstract":"A general equation is derived for modulation waveforms which can be serially demodulated. This equation is used to define the modulation structure for SOQPSK (serial offset quadrature phase shift keying). Coherent serial demodulation is shown to perform with the same BER (bit error rate) peeeance as a parallel demodulator for the condition of optimum correlation detection. Serial noncoherent detection is shown to provide intersymbol interference which increases the false correlation level if the spreading codes are not chosen properly. A computer simulation was developed which allowed the performance of coherent and noncoherent SOQPSK detection to be studied. The simulation results verified the analytical calculations.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130435611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Architecture selection issues for deployable local area networks 可部署局域网的体系结构选择问题
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247171
B. K. Ashley, D. P. Hunninghake
{"title":"Architecture selection issues for deployable local area networks","authors":"B. K. Ashley, D. P. Hunninghake","doi":"10.1109/TCC.1992.247171","DOIUrl":"https://doi.org/10.1109/TCC.1992.247171","url":null,"abstract":"The authors explore unique needs and requirements of local area networks (LANs) used by deployed tactical units and assess some commercially available architectures. They consider deployability issues, LAN (local area network) components, LAN standards, and performance issues. They give general recommendations with regard to standards, fiber optics, topology and protocol, and LAN specialists. They note that no single definitive answer exists; a more definite answer would require an in-depth study of specific mission needs and requirements of the deployed units.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133705543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speakeasy-a new direction in tactical communications for the 21st century 口语——21世纪战术通信的新方向
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247154
F. Torre
{"title":"Speakeasy-a new direction in tactical communications for the 21st century","authors":"F. Torre","doi":"10.1109/TCC.1992.247154","DOIUrl":"https://doi.org/10.1109/TCC.1992.247154","url":null,"abstract":"Speakeasy, now in its advanced development model phase, will be able to communicate with any of fifteen presently fielded radio types: a waveform ensemble spanning HF through X-band and comprising skywave, line-of-sight, tropo and satellite communications media. In addition, Speakeasy contains a new, advanced, waveform which, together with advanced receiver processing and automatic link reconfiguration/control, provides unprecedented resistance to interception, exploitation, interference, and propagation impairments such as multipath. The Speakeasy system is based on a 'library' of common standardized modules. Each deployment is composed of a particular combination of modules according to the platform and mission. The manpack, because of the relatively large number envisioned for the future battlefield, is the determiner of the module designs and standards. This permits other platforms to enjoy reduced initial and life cycle costs from module commonality with the numerically dominant manpack. An overview of the Speakeasy concept is presented, and its functional design concept is examined.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124693833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A full-function tactical radio for UHF SATCOM 用于超高频卫星通信的全功能战术无线电
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247143
R.J. Skalka, K. T. Le
{"title":"A full-function tactical radio for UHF SATCOM","authors":"R.J. Skalka, K. T. Le","doi":"10.1109/TCC.1992.247143","DOIUrl":"https://doi.org/10.1109/TCC.1992.247143","url":null,"abstract":"The Motorola/Titan team has developed a UHF SATCOM terminal that provides the tactical user full-function UHF communications. From the basic line-of-sight communication to the multiplexed DAMA (demand assigned multiple access) networks, the MDT (Multipurpose DAMA Terminal) provides connectivity in a single manpack package. Designed-in ruggedness and capacity for growth in capability assure the user that the terminal will support his needs into the future. The capabilities of the MDT are described, and attention is given to the system architecture, the transceiver, the modem, and the user interface.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123891765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A new EHF ground terminal 一个新的EHF地面终端
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247142
T. Thomas
{"title":"A new EHF ground terminal","authors":"T. Thomas","doi":"10.1109/TCC.1992.247142","DOIUrl":"https://doi.org/10.1109/TCC.1992.247142","url":null,"abstract":"A ground terminal design has been demonstrated which satisfies many of the emerging tactical satellite communications needs. The objective of this project was to develop and evaluate low-risk terminal design concepts based on current technologies. The basic approach integrated existing electronic components, a stabilization subsystem, a power subsystem and a new, automatically deployable antenna onto a single pallet. The performance goals were: setup in less than ten minutes, one person crew, remote control capability, eight user ports (four simultaneous channels), and survival of tactical environments. Experience gained during this project reduces the technical risk of developing the Army's next generation Milstar terminal, SMART-T.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127751985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Verification of receive performance requirements for direct-conversion digital receivers 直接转换数字接收机接收性能要求的验证
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247159
W.A. Welch, S.W. Thudium, E. Chandler
{"title":"Verification of receive performance requirements for direct-conversion digital receivers","authors":"W.A. Welch, S.W. Thudium, E. Chandler","doi":"10.1109/TCC.1992.247159","DOIUrl":"https://doi.org/10.1109/TCC.1992.247159","url":null,"abstract":"The authors explain a nonstandard test procedure that verifies the noise figure and BER (bit error rate) requirements of a direct-conversion digital receiver. They discuss the performance specifications and verification methods for a conventional superheterodyne receiver and show why the verification methods could not be applied to a direct-conversion receiver. They derive a relationship between the minimum receive signal level, noise figure, and E/sub b//N/sub 0/ for a specified BER for a direct-conversion receiver. They also propose a nonstandard specification requirement for digital-processing receivers, based on this work. The critical performance requirement for a digital receiver is the BER at the minimum receive signal level. They show how the specification of (E/sub b//N/sub 0/)/sub RF/, as used in an equation given here, allows a receiver designer to make tradeoffs between noise figure and implementation loss of the demodulator for a specified BER performance of the receiver. They recommend that BER at a particular (E/sub b//N/sub 0/)/sub RF/ be used to specify the performance of a digital receiver, rather than noise figure and BER at a specified E/sub b//N/sub 0/ into the demodulator.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125267836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Removing cosite interference using tunable filter technology 使用可调谐滤波器技术去除复合干扰
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247137
D. Chambers, D.W. Howett, R. Streeter
{"title":"Removing cosite interference using tunable filter technology","authors":"D. Chambers, D.W. Howett, R. Streeter","doi":"10.1109/TCC.1992.247137","DOIUrl":"https://doi.org/10.1109/TCC.1992.247137","url":null,"abstract":"During the development of the tunable multicoupler used within the Joint Surveillance Target Attack Radar Subsystem (JSTARS), many sources of intermodulation were discovered. Additionally, the definition of the test system used to measure these products proved quite significant in determining the final system solution. The authors provide an overview of the JSTARS tunable multicoupler and the related performance criteria, a short tutorial on intermodulation concepts, a description of the original multicoupler performance, a description of the test system and how it evolved, and a presentation of the final multicoupler performance and how it was achieved.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131552223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tactical applications of defense microspace communications 国防微空间通信的战术应用
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247144
R. Bonometti
{"title":"Tactical applications of defense microspace communications","authors":"R. Bonometti","doi":"10.1109/TCC.1992.247144","DOIUrl":"https://doi.org/10.1109/TCC.1992.247144","url":null,"abstract":"The author examines recent initiatives at the Defense Advanced Research Projects Agency (DARPA) in the area of advanced space communications technologies and the role and utility of small satellites in supporting defense satellite communications needs. In particular, recent demonstrations of small satellites for tactical support applications are summarized. After a brief overview of the overall Advanced Space Technology Program, the author discusses the MACSAT (Multiple Access Communications Satellites) system and the Microsat system.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132213403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Tactical HF modem performance: a simplified comparison of serial tone vs. parallel tone approach 战术高频调制解调器的性能:串行调音与并行调音方法的简化比较
[1992] Proceedings of the Tactical Communications Conference Pub Date : 1992-04-28 DOI: 10.1109/TCC.1992.247152
R. Dean
{"title":"Tactical HF modem performance: a simplified comparison of serial tone vs. parallel tone approach","authors":"R. Dean","doi":"10.1109/TCC.1992.247152","DOIUrl":"https://doi.org/10.1109/TCC.1992.247152","url":null,"abstract":"A simplified analysis of performance of the PTM (parallel tone modem) and STM (serial tone modem) equipments demonstrates that the PTM will equal or exceed the performance of the STM for short haul tactical HF links. The MilStd 188-110a STM technology demonstrates advances in HF modem technology for channels that exhibit severe multipath conditions. The MilStd 188-110a STM will also enhance performance in disturbed HF channel conditions as occur in the auroral regions. Coding and interleaving are, however, still the most significant factors affecting overall performance in both voice and data communications. In data communications interleaving of up to 5 s with good modern coding techniques will enable acceptable performance with either approach. For voice communications the voice and coding integration applied in the ANDVT works quite effectively and mitigates any advantages of applying MilStd 188-110a STM solutions to this application. This is also unwise given the interoperability achieved under existing military and NATO standards.<<ETX>>","PeriodicalId":134371,"journal":{"name":"[1992] Proceedings of the Tactical Communications Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128632591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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