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Communication
SOFTWARE COST ESTIMATION AND SIZING METHODS  

Estimating the size and cost of software is a risky business. When software is a crucial component in numerous space, weapon, aircraft, and information technology projects critical to operations, as it often is for the Air Force, accurate estimates of software costs are essential. Because software size is usually the most influential factor in determining software costs, good estimates of size are critical to good cost estimation. Rather than seeking the perfect method for ...Read more >

127 Pages
342.36 KB
NAVY NETWORK DEPENDABILITY  

The Navy and the Department of Defense (DoD) are increasingly dependent on networks and associated net-centric operations to conduct military missions. As a result,a vital goal is to establish and maintain dependable networks for ship and multiship (e.g., strike group) networks. An essential step in maintaining the dependability of any networked system is the ability to understand and measure the network’s dependability.The term network dependability is broad. It is determined, in part, by the ...Read more >

127 Pages
4.40 MB
FUTURE ARMY BANDWIDTH NEEDS AND CAPABILITIES  

It is important to note that bandwidth and capacity are not the only measures of communications performance that have to be considered. Other important measures are timeliness, accuracy, efficiency, latency, throughput and reliability. In addition, a communications network must support user needs for mobility and reconfigurability, information assurance and interoperability. Quality of service (QoS), where the measures listed above can be appropriated or guaranteed based on the priority ...Read more >

135 Pages
2.37 MB
NKN, GARUDA AND E-SCIENCE  

13 Pages
3.06 MB
NATIONAL KNOWLEDGE NETWORK (NKN)  

National Knowledge Network (NKN) project is aimed at establishing a strong and robust internal Indian network which will be capable of providing secure and reliable connectivity. Using NKN, all vibrant institutions with vision and passion will be able to transcend space and time limitations in accessing information and knowledge and derive the associated benefits for themselves and for the society. Establishing NKN is a significant step towards ushering in a knowledge revolution in the country ...Read more >

6 Pages
2.19 MB
OBJECTIVE, ARCHITECTURE AND STRATEGY FOR NETWORK CENTRIC  

This paper presents objectives, architecture and an outline of strategy for achieving a network centric communications foundation.The paper is born of a deep sense of frustration searching and awaiting these artifacts from somewhere anywhere in the Department of Defense. If a serviceable architecture and strategy existed, I would teach it. Lacking that, herewith is my own.The metaphor of the dancing bear may be of value to us: one may object that the bear does not dance well, which ignores the ...Read more >

8 Pages
1.78 MB
GARUDA – NKN PARTNERS MEET  

35 Pages
1.85 MB
OPTIMIZING BANDWIDTH IN TACTICAL COMMUNICATIONS SYSTEMS  

Current tactical networks are oversaturated, often slowing systems down to unusable speeds. Utilizing data collected from major exercises and Operation Iraqi Freedom II (OIF II), a typical model of existing tactical network performance is modeled and analyzed using NETWARS, a DISA sponsored communication systems modeling and simulation program. Optimization technologies are then introduced, such as network compression, caching, Quality of Service (QoS) and the Space Communication Protocol ...Read more >

79 Pages
1.64 MB
ASSESSING TRADEOFFS IN MOBILE AD-HOC NETWORK DEPLOYMENT : A CASE STUDY IN GROUND SOLDIER MOBILE SYSTEMS  

Advances in information technology are yielding dramatic changes in the use of real-time information sharing to support military operations in complex environments. As the military use of wireless devices and services continues to grow, the expectation is that these technologies will enable unprecedented levels of operational capability and mission assurance. However, the use of additional communication technologies is not without cost. Network operators face considerable tradeo s in ...Read more >

69 Pages
1.60 MB
VISION FOR A NET-CENTRIC, SERVICE ORIENTED DOD ENTERPRISE  

The security challenges of the 21st century are characterized by change and uncertainty. Operations vary widely and partners cannot be anticipated. However, we are confronting that uncertainty by becoming more agile. Greater levels of agility rest upon leveraging the power of information – the centerpiece of today's Defense transformation to net-centric operations (NCO). Our forces must have access to timely and trusted information. And, we must be able to quickly and seamlessly share ...Read more >

39 Pages
1.47 MB
DOD NEEDS TO IMPROVE PROCESS FOR ENSURING INTEROPERABILITY OF TELECOMMUNICATIONS SWITCHES  

DOD does not have a well-defined process, including clear requirements, for certifying and authorizing telecommunications (telecom) switches. DOD’s process is not fully documented, current, or complete.Additionally, the process lacks an effective enforcement mechanism. Asa result, DOD is increasing the risk that its certification and authorization process will be applied inconsistently and that the department telecommunications will experience future interoperability problems.DOD attributed ...Read more >

101 Pages
1.60 MB
ANTENNA AND RANGE CONSIDERATIONS  

Antennas can be characterized as directional or nondirectional. This is, of course, a great over-simplification.Antennas, such as whips and dipoles, are sometimes (incorrectly) described as omni-directional. This is not true, as both antenna types have nulls in their coverage. However, both types, if vertically oriented, provide 360 degrees of azimuthal coverage. There are also circular arrays of directional antennas that provide full azimuthal coverage. Directional antennas (including but ...Read more >

9 Pages
4.21 MB
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