Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age最新文献_第2页

Algorithms for routing in multicast packet radio networks 组播分组无线网络中的路由算法

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561091

C. Pomalaza-ráez, T. L. Hemminger, E. Whitehill

{"title":"Algorithms for routing in multicast packet radio networks","authors":"C. Pomalaza-ráez, T. L. Hemminger, E. Whitehill","doi":"10.1109/TCC.1996.561091","DOIUrl":"https://doi.org/10.1109/TCC.1996.561091","url":null,"abstract":"In a packet radio network (PRN), transmission of packets involves both the transmission of information the end user needs and the transmission of additional or \"overhead\" information necessary for proper operation of the network. Two solutions to the multicast transmission problem have been presented, one which employs the Hopfield network, and the other based on heuristic algorithms. Although both approaches usually yield suboptimal performance when compared to an exhaustive search, the time required by these methods to reach a solution is lower by several orders of magnitude for all but the simplest PRNs. The Hopfield method is extremely easy to implement and converged to a valid solution in over 98% of our simulations. This is considered a high success rate for this type of network, which we attribute to the sparseness of the configuration and careful choice of parameters. The heuristic is an improvement over the neural network yielding the lowest number of transmissions and requiring the least amount of time. Either approach may be suitable for determining solutions to this NP-complete problem depending on the actual application and computational resources available.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"124 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123243165","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

The design and analysis of the AFATDS communication networks using simulation 对AFATDS通信网络进行了仿真设计和分析

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561095

D. Thuente, C. Brown, T. Borchelt, E. Hill

{"title":"The design and analysis of the AFATDS communication networks using simulation","authors":"D. Thuente, C. Brown, T. Borchelt, E. Hill","doi":"10.1109/TCC.1996.561095","DOIUrl":"https://doi.org/10.1109/TCC.1996.561095","url":null,"abstract":"This paper presents a brief overview of the simulation of communication systems including the role of simulation in their design and analysis. It focuses on the communication performance modeling of the Advanced Field Artillery Tactical Data System (AFATDS) communications system. Particular attention is paid to the verification and validation of the simulation model. AFATDS is a multi-service automated command and control system for the fire support operations. AFATDS provides the capabilities to process, analyze, and exchange combat information within the AFATDS architecture and with other Army battlefield artillery systems. AFATDS is a system of mobile, dispersed, multi-functional nodes providing automated planning and execution capabilities to support operational facilities (OPFAC). Our modeling effort is concerned with the communication protocol stack for the AFATDS communication network but is primarily focused at the data link control and network access control layers. We implemented (using the simulation modeling tool OPNET) the variable message format (VMF) protocol (it has many areas of commonality with MIL-STD-188-220 A). We examined the effect various system timers have on the system performance. We studied the effect the processor polling frequency of the modem has on the system throughput and on the average time to complete processing of mission threads. The media access timers, the retransmission timer of the data link control layer, and the segment size limits are also studied to optimize system performance.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132619214","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: 9

Digital data link (DDL) through battlefield combat identification system (BCIS) 通过战场作战识别系统(BCIS)的数字数据链(DDL)

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561098

T. Baldwin, J. Ginther, T. Dere, P. Nelson

{"title":"Digital data link (DDL) through battlefield combat identification system (BCIS)","authors":"T. Baldwin, J. Ginther, T. Dere, P. Nelson","doi":"10.1109/TCC.1996.561098","DOIUrl":"https://doi.org/10.1109/TCC.1996.561098","url":null,"abstract":"During the development phase of the battlefield combat identification system (BCIS) equipment, the Army/TRW-Magnavox Team explored ways to exploit the data carrying capacity of BCIS with respect to providing short range situation awareness (SA) communication links on the tactical battlefield. These LPI/LPD digital data links (DDL) play a secondary role to the BCIS primary task of achieving a high probability of friend identification via a cooperative question-answer exchange. Some of the major issues in implementing the DDL as an integral feature in BCIS were the possibility of degrading friend ID performance and the concern that the range that could be achieved with 0.5 watts transmitted and received using the BCIS omnidirectional antenna would be sufficient to be practical in the tactical scenarios. After preliminary analysis indicated that these issues would be satisfactorily resolved a program to demonstrate a DDL capability was initiated. This paper introduces the basic concept of the DDL and provides the initial tests that were performed using the current BCIS equipment.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123400447","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

Optimal diversity allocation in coherent multiuser systems 相干多用户系统中最优分集分配

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561118

D. Goeckel, W. Stark

{"title":"Optimal diversity allocation in coherent multiuser systems","authors":"D. Goeckel, W. Stark","doi":"10.1109/TCC.1996.561118","DOIUrl":"https://doi.org/10.1109/TCC.1996.561118","url":null,"abstract":"The ultimate goal of universal wireless communications on demand can only be met if a number of key issues are addressed. Foremost among these are how to deal with the multipath fading inherent to the wireless communications environment and how to allocate bandwidth to a multitude of users. The solution to the multipath fading problem is to introduce known redundancy into the data stream in the form of error control coding. The paper shows how the proper assumption on the inner code (a repetition code in the guise of direct-sequence spreading that is soft-decision decoded) allows the system to be flexible enough to encompass many of the viable wireless system implementations. A system theoretically equivalent to a coded multicarrier system arises out of the coding problem discussed. When the soft-decision inner repetition code is employed, the multicarrier system is then seen to encompass both FH/CDMA and DS/CDMA as well. A concatenated coding formulation is introduced and the throughput measure is formally defined. The binary coherent modulation scheme investigated is introduced along with the system assumptions considered. Throughput optimization over the rate of the inner code and the number of users in the system is then performed. Following this general optimization, the paper demonstrates that when the number of users in the system is fixed, throughput optimization is equivalent to minimization of the probability of error. System optimization in this special case is then considered.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124255648","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

Airborne VHF environment noise measurements 机载甚高频环境噪声测量

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561108

M.J. Paradie, J. Pernic

{"title":"Airborne VHF environment noise measurements","authors":"M.J. Paradie, J. Pernic","doi":"10.1109/TCC.1996.561108","DOIUrl":"https://doi.org/10.1109/TCC.1996.561108","url":null,"abstract":"Environment noise can be a limiting factor for airborne military command and control communications. This paper describes the techniques and results of noise measurements conducted in the VHF frequency band, as observed from an airborne C-130 aircraft operating over the state of Arizona. These measurements were performed to provide a better understanding of the noise environment applicable to VHF radio communications on the aircraft. The measurements were collected on several occasions using a VHF blade antenna mounted on the bottom of the aircraft. A modified surface-noise model is described to predict median noise levels at the aircraft altitude. In the VHF-FM band, median noise levels over rural Arizona were 4 to 5 dB above model-predicted levels. These levels of airborne VHF-FM noise will impact radio operation on the aircraft, especially in the lower portion of the band. In the VHF-AM band, noise levels were too close to the measurement noise floor to accurately determine noise levels. Because of the much lower level, however, airborne VHF-AM noise is not expected to have a significant impact on radio operation. A single measurement trial was also collected in the VHF-FM band near Phoenix during the evening rush hour. Measured noise levels were 17 dB above median values encountered over rural Arizona. The implication for VHF radio operation is that noise levels during certain times and operating locations may be significantly higher than normally encountered values.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124784224","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

Optimization of routing protocol for packet radio networks 分组无线网路由协议的优化

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561120

C. Yoon, C. Chiu Chan

{"title":"Optimization of routing protocol for packet radio networks","authors":"C. Yoon, C. Chiu Chan","doi":"10.1109/TCC.1996.561120","DOIUrl":"https://doi.org/10.1109/TCC.1996.561120","url":null,"abstract":"Dynamic adaptive routing is required to improve the survivability of a packet radio network. A protocol called Open Shortest Path First (OSPF) Version 2 has been selected to meet the requirement. The network connectivity status, which often changes rapidly in a highly mobile tactical environment (due to jamming and station outages/additions), must be updated dynamically and automatically by the protocol to maintain reliable network service. With fast updates, the topology database will be more up-to-date and routing decisions will be more optimum. However high update rate will consume more channel bandwidth and will have adverse impact on user traffic. The objective is to optimize the OSPF protocol such that the system will maintain acceptable performance under anticipated traffic loading and network scenarios. The timing parameters associated with the update process will be varied to determine the optimum settings. The updates are transmitted in OSPF packets called link state updates (LSUs). The LSU packets will compete with user traffic on channel utilization. To reduce the impact on user traffic, the OSPF protocol parameters will be optimized to reduce the overhead traffic. A detailed simulation model has been developed for this effort. We describe the use of the robust design method in conjunction with the simulation model to optimize the protocol for dynamic routing. The main advantage of the robust design method is to provide a disciplined approach for experimentation (i.e., with no need to run all possible combinations of the experiment) that is needed to determine the most influential control factors.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129999814","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

The Joint STARS OK-627/ARY-3 UHF radio control group- evolution of a state of the art airborne cosite communications system 联合STARS OK-627/ARY-3超高频无线电控制组——发展最先进的机载复合通信系统

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561100

D. Dillery, C.L. Beardsley

{"title":"The Joint STARS OK-627/ARY-3 UHF radio control group- evolution of a state of the art airborne cosite communications system","authors":"D. Dillery, C.L. Beardsley","doi":"10.1109/TCC.1996.561100","DOIUrl":"https://doi.org/10.1109/TCC.1996.561100","url":null,"abstract":"The E-8C Joint STARS system was developed by and is produced by the Northrop Grumman Corporation Surveillance and Battle Management Systems (SBMS) located in Melbourne, Florida. It was developed for the US Air Force and operationally supports the Air Force and the Army by detecting moving and stationary ground targets with its on-board radar and data, linking the information to ground support modules (GSM). Joint STARS also communicates by voice and data links with other Army and Air Force units. Designing for communications performance on joint STARS, especially UHF, is complicated by the severe cosite environment due to the extensive radio configuration required to support the large crew. The communications system includes a suite of 12 UHF HAVE QUICK II capable radios divided into two components, the aircraft component and the prime mission equipment (PME) component. The PME component was developed by Magnavox Electronic Systems Company, Ft. Wayne, Indiana. The PME, the OK-627/ARY-3 UHF radio control group includes 12 ARC-225 UHF radio sets, 12 F-1654/A radio frequency interference filters developed by the ECI Division of E-Systems, St. Petersburg, Florida, a C-12370/A control-interface which acts as the radio group controller (RGC) and an O-1814/A reference frequency oscillator (RFO). The aircraft component includes 12 UHF antennas and their associated interconnecting cables, prime power, cooling, acoustic noise control and mounting provisions. The system interfaces to the 22 person crew at operator workstations (OWS) through TSEC/KY-58 secure speech equipment, the OW-115/ARY-3 intercommunications group and redundant MILVAX computers in the operations and control (O&C) subsystem.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116989849","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

Communications to high latitudes using a commercial low Earth orbit satellite system 利用商业低地球轨道卫星系统与高纬度地区进行通信

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561110

B.S. Geaghan, R. L. Yuan

{"title":"Communications to high latitudes using a commercial low Earth orbit satellite system","authors":"B.S. Geaghan, R. L. Yuan","doi":"10.1109/TCC.1996.561110","DOIUrl":"https://doi.org/10.1109/TCC.1996.561110","url":null,"abstract":"Low Earth orbit (LEO) satellite communications systems could be deployed providing voice, data, facsimile and paging services to mobile users in many regions of the world. The LEO systems are expected to be used by the Department of Defense (DoD). The DoD will be able to use these systems for other applications that take advantage of the special features resulting from the LEO configuration, such as global connectivity and small mobile terminal size. We consider the ability of a LEO system to support communications to mobile terminals in the high latitudes. The study is based upon the IRIDIUM system, which will provide continuous polar coverage to commercial users. The two key criteria for assessing the ability of the LEO system to support high latitude missions are detectability of the radio frequency (RF) transmissions of the mobile terminal and communications availability. Detectability is critical because there are not expected to be many IRIDIUM users in the high latitudes. Detecting a high latitude user implies some degree of automatic identification, whereas detection at a lower latitude must be followed by some identification process to discriminate between many users. To decrease the detectability of the mobile unit RF emissions, it is assumed that the mobile terminal antenna is modified to reduce low elevation angle RF emissions. Therefore, the impact on detectability, as well as connectivity, when using a modified mobile terminal antenna is examined. After a description of the mobile terminal RF characteristics, the detection and connectivity analyses are presented.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126522032","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: 7

Near Term Digital Radio-a first look 近期数字收音机——第一眼

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561113

L. Williams, L. Emery

引用次数: 9

SINCGARS system improvement program (SIP) specific radio improvements SINCGARS系统改进计划(SIP)特定无线电改进

Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age Pub Date : 1996-04-30 DOI: 10.1109/TCC.1996.561109

B. Hamilton

{"title":"SINCGARS system improvement program (SIP) specific radio improvements","authors":"B. Hamilton","doi":"10.1109/TCC.1996.561109","DOIUrl":"https://doi.org/10.1109/TCC.1996.561109","url":null,"abstract":"The SINCGARS system improvement program (SIP) ground and airborne radios target specific improvements to address the need for improved position awareness, improved data throughput, and speed of service on the battlefield. This paper specifically discusses the implementation of these improvements in the radios. First, it discusses the implementation of Reed-Solomon forward error correction to increase throughput while improving range and significantly improving the interference protection of the radio against cosite and jamming. The discussion includes the investigation of several coding approaches and implementations, and the results of the analysis which led to the selection of a family of the Reed-Solomon codes. The second area of discussion is the implementation of a new frequency hopping waveform that increases the probability of synchronization and reduces transmission overhead. Thirdly, the implementation of an improved channel access algorithm that allows mixed voice and packet data operation on a common net with minimal impact of voice operation at high packet data throughput rates is discussed. In addition, the implementation of an efficient data interface, per MIL-STD-188-220 A, to ITT's Internet controller (INC) which provides for packet radio relay nodes across the battlefield is discussed. Finally, the implementation of the embedded GPS position information, and user ID, in voice and data messages to provide reporting of friendly force positions for situation awareness is discussed.","PeriodicalId":398935,"journal":{"name":"Proceedings of the 1996 Tactical Communications Conference. Ensuring Joint Force Superiority in the Information Age","volume":"238 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113990942","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: 34