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MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's最新文献

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Practical Considerations in SPC and Reliability 在SPC和可靠性的实际考虑
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805748
K. Dey
{"title":"Practical Considerations in SPC and Reliability","authors":"K. Dey","doi":"10.1109/MILCOM.1986.4805748","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805748","url":null,"abstract":"In applying reliability and statistical process control (SPC) techniques to military systems/operations a number of practical issues arise in both technical and management areas. This presentation reviews some such issues in the following applications: 1) Component part and repairable system reliability data from the field, 2) Management and SPC. In collecting and analyzing military reliability data there are considerable obstacles to conventional statistical analysis, such as grouped data, changing parts lists/inventories, homogeneity and measurement noise. Some suggestions for approaching data analysis are given. In applying SPC in industry and to military organizations, the management aspects are as important as the statistical techniques. Some management considerations are reviewed with implications for statistical practitioners.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115463284","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
Broadband Frequency Selective Surface 宽频选择面
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805759
D. Palma, W. C. Wong
{"title":"Broadband Frequency Selective Surface","authors":"D. Palma, W. C. Wong","doi":"10.1109/MILCOM.1986.4805759","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805759","url":null,"abstract":"Future communication satellites will use dichroic subreflectors to produce multiple focal regions from a single parabolic reflector. This additional focal region will allow for beams operating over different frequency bands to be produced by a single reflector and avoid the feed crowding or mechanical limitations current reflector antennas encounter. This paper presents parametric studies on a selected number of dichroic elements for possible use as a frequency selective subreflector. The theoretical and measured frequency response of tripoles and Jerusalem crosses are presented. This paper also addresses the design of multilayered dichroic panels to achieve improved gain slope and bandwidth. Designs capable of producing a 4:1 stopband and a 1.4:1 band separation for circular polarization and angles of incidence up to 40 degrees are shown.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"541 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123067430","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
Rapid Acquisition/Reacquisition Capability in a Tactical AJ Modem 战术AJ调制解调器的快速采集/再采集能力
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805660
R. F. Cobb
{"title":"Rapid Acquisition/Reacquisition Capability in a Tactical AJ Modem","authors":"R. F. Cobb","doi":"10.1109/MILCOM.1986.4805660","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805660","url":null,"abstract":"For a spread spectrum modem, achieving rapid acquisition and reacquisition under heavy jamming requires accurate knowledge of time and frequency and of satellite range and range rate. The lack of such information in mobile terminals during wartime conditions results in severe limitations in acquistion capability. This paper describes how the Harris AJ/Control Modem for the Ground Mobile Forces network uses the satellite beacon PN code state and carrier frequency as network time and frequency standards, respectively. The paper explains the use of satellite ephemeris data, normally unavailable to tactical terminals, to provide fixed-terminal acquisition capability in a low-cost mobile terminal.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126530","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
LSI Architecture for VQ Systolic Array Systems VQ收缩阵列系统的LSI架构
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805876
B. Tao, H. Abut, F. Mehran
{"title":"LSI Architecture for VQ Systolic Array Systems","authors":"B. Tao, H. Abut, F. Mehran","doi":"10.1109/MILCOM.1986.4805876","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805876","url":null,"abstract":"We present an architecture for two high-speed, efficient processors to be used as elements in a systolic array for vector quantization (VQ). A distortion processor module (DPM) computes error terms at a rate of 10 million per second in a maximal pipeline configuration. Its structure is especially suited for highly concurrent processing such as in a systolic array system. An array processor controller (APC) administrates the system, receives distortion information from the array at a 10 MHz rate, and determines the optimum code either in a full-search or tree-search manner. The APC is programmable so that the same system is easily reconfigured for new applications. A real-time system was built and tested in a 0.5 bit per pixel (bpp) application, and produced no visible distortion and negligible SNR difference when compared to a floating-point simulation.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117190959","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: 2
Quad-Tree based Two Source Image Coding 基于四叉树的二源图像编码
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805874
P. Farrelle, Anil K. Jain
{"title":"Quad-Tree based Two Source Image Coding","authors":"P. Farrelle, Anil K. Jain","doi":"10.1109/MILCOM.1986.4805874","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805874","url":null,"abstract":"In this paper we describe an adaptation of our two source RBC algorithm[1] where we introduce a variable block size. The blocks are chosen to meet some uniformity criterion and are generated via a quad-tree segmentation of the image which allows the segmentation overhead to be coded very efficiently. The prediction component is improved over standard RBC prediction with a fixed block size and some images may be coded using the prediction alone. However it is more economical to also code the residual component for more detailed images.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"39 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120807674","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
CMA-based Techniques for Adaptive Interference Rejection 基于cma的自适应干扰抑制技术
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805864
J. Treichler, M. Larimore
{"title":"CMA-based Techniques for Adaptive Interference Rejection","authors":"J. Treichler, M. Larimore","doi":"10.1109/MILCOM.1986.4805864","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805864","url":null,"abstract":"This paper surveys several recent developments in the area of applying the Constant Modulus Algorithm (CMA) to the problem of rejecting interference from a signal deemed to be of interest. This algorithm was originally developed for removing the dispersive effects of multipath propagation from constant envelope communications signals, but has proven useful in a variety of other applications, such as suppressing additive narrowband interference, combining diversity receiving channels to reject crosspolarized signal components, and steering nulls in a sensor array. The paper first reviews the algorithm itself and its original application. From this departure point, several applications, including those listed above, are examined and performance results cited where possible. Some of these applications have encouraged the development of modified algorithms - several of these are described, including one employing real-valued data and another which allows \"fast\" convergence rather than the slower convergence characteristic of the gradient-search-based algorithms.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123455787","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
The AT&T Architecture: Evolving to an Integrated Services Digital Networks AT&T架构:向综合业务数字网络演进
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805881
Richard T. Roca, J. Weber
{"title":"The AT&T Architecture: Evolving to an Integrated Services Digital Networks","authors":"Richard T. Roca, J. Weber","doi":"10.1109/MILCOM.1986.4805881","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805881","url":null,"abstract":"Modern communications has evolved to a network architecture based on distributed intelligence. First introduced in the public network and later expanded by private network developments, out-of-band signaling has been used to achieve this distributed architecture. Integrated Services Digital Network takes this to the next step by linking private and public networks to each other and to terminals and hosts in a fully distributed processing architecture that allows integrated support of voice, data, and video applications. The next steps in AT&T's ISDN beyond those planned for today will focus on the need to accommodate higher bandwidth and larger capacity and the provision of Universal Information Services.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122301325","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
Trinary Logic Operations and Circuitry with Communication Systems Applications 三联逻辑运算和电路与通信系统的应用
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805736
Frederick G. Reinagel
{"title":"Trinary Logic Operations and Circuitry with Communication Systems Applications","authors":"Frederick G. Reinagel","doi":"10.1109/MILCOM.1986.4805736","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805736","url":null,"abstract":"This paper begins with a general discussion of numbering system properties including the concepts of ambipolarity and radix. A classic derivation of the optimumly efficient radix is given. This leads to the consideration of a trinary number system as an advantageous alternative to the binary system. There follows a discussion of the practical economies of the trinary system in hardware realization and operational speed of digital systems. A family of functional, combinatorial, and sequential logic operations is developed with associated truth tables. Synthesis of complex functions from these elementary operations is illustrated for data storage, data movement, and arithmetic processes. A practical scheme for realizing trinary system circuitry using CMOS technology is presented. Trinary digital-to-analog (D-A) and analog-to-digital (A-D) circuits and algorithms are considered. The paper includes discussions of applications of the trinary system to communication formats and carrier modulation schemes, including the use of pseudo-noise (PN) trinary coding for continuous and pulsed spread-spectrum modems.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128965586","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: 4
GaAs MMIC Frequency Converters and their System Applications GaAs MMIC变频器及其系统应用
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805823
P. Ho, E. Wilson
{"title":"GaAs MMIC Frequency Converters and their System Applications","authors":"P. Ho, E. Wilson","doi":"10.1109/MILCOM.1986.4805823","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805823","url":null,"abstract":"This paper describes the development of a family of GaAs MMIC frequency converter chips operating from 0.8 to 8 GHz with 20-35 dB gain. Details of design approach and product performance are reported. More complex subsystems, such as image rejection converters, phase locked loop sources, and complete receivers, can be designed using these converters as basic building blocks. These more complex subsystems are also described in detail.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"9 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124188448","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: 2
High Power GaAs FET Solid State Amplifier (32 watt) Development Program 高功率GaAs场效应晶体管固态放大器(32瓦)开发计划
MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI: 10.1109/MILCOM.1986.4805824
W. Hoo
{"title":"High Power GaAs FET Solid State Amplifier (32 watt) Development Program","authors":"W. Hoo","doi":"10.1109/MILCOM.1986.4805824","DOIUrl":"https://doi.org/10.1109/MILCOM.1986.4805824","url":null,"abstract":"A High Power Solid State Amplifier (HPSSA) using Gallium Arsenide Field Effect Transistors (GaAs FETs) has been developed to compete with the 40 watt TWTAs on the Defense Satellite Communications System III (DSCS III), the latest generation of United States Military Communications Satellites. The Engineering Model of this state-of-the-art component demonstrates that it is competitive with the 40 watt TWTA from an efficiency and performance standpoint, and is significantly more reliable. Specific typical data and a summary of overall component performance is presented. Accelerated GaAs FET life data obtained and used in a MIL-HDBK analysis shows that the reliability of the HPSSA will be substantially greater than projected TWTA reliabilities. The EM amplifier has been successfully tested to DSCS III qualification level, hard mechanical environment tests, proving that it is capable of being flight qualified. With this development, High Power GaAs FET Solid State Amplifiers at the 32-40 watt level are shown to be ready to be incorporated onto high reliability space applications.","PeriodicalId":126184,"journal":{"name":"MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's","volume":"361 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125653037","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
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