There are some major distinctions between the military and commercial communications. We can enumerate the most basic two of them as the hostile environment, and the rapid deployment requirement. In our study, we discuss how to employ emerged and evolving civilian technologies, namely the third generation (3G) Personal Communications Services (PCS) techniques for military communications in spit...

Speech intelligibility of two types of vocoders was measured using the modified rhyme test. One type of vocoder, a continuous variable slope delta (CVSD), was a waveform encoder. The other type, an advanced multi-band excitation (AMBE), was a parametric encoder. In the first experiment, clear speech was processed through the vocoders. Intelligibility was measured in a control condition, i.e. wi...

Over the last five to seven years the use of chat in military contexts has expanded quite significantly, in some cases becoming a primary means of communicating time-sensitive data to decision makers and operators. For example, during humanitarian operations with Joint Task Force-Katrina, chat was used extensively to plan, task, and coordinate predeployment and ongoing operations. The informal ...

The goal of this paper is to present innovative image applications that will be available on future high data rate HF transmissions. Fitting in the considerations and studies carried out currently on future HF transmissions, for instance within NATO groups, these new image applications are currently under development in the EDA HDR-HF project, which aims at developing new communication technolo...

Accurate and stable frequency reference sources are critical for commercial, navigation, military, and scientific space applications. Each piece of flight hardware has requirement-types that are generic such as size, weight, power, and reliability, and requirement-types that are specific to the hardware function. The key requirement-types for frequency reference sources are phase noise and stab...

VOLUME 10, NUMBER 1, 1997 THE LINCOLN LABORATORY JOURNAL 35 T    operates worldwide in a variety of international environments that require language translation. Translators who can interpret military terminology are a scarce commodity in countries such as the Republic of Korea (R.O.K.), and U.S. military leaders there support the development of bilingual machine translati...

The existing UHF Satellite Communications (SATCOM) transponders used for military applications use efficient, saturated power amplifiers, which provide one earth-coverage antenna beam. The amplifier is dedicated to small frequency band and only handles a few carriers simultaneously. The communications capacity needed to support future military forces on the move will require satellite payload p...

Given the importance of Situation Awareness (SA) in military operations, there is a critical need for a realtime, unobtrusive tool that objectively and reliably measures warfighters’ SA in both training and operations. Just as the requirement for improved access to SA measures has become vital, it is now commonplace for military team communications to be mediated by technology, hence easily cap...

Spread spectrum communications were originally developed for military purposes to capitilize on their desirable antijam (AJ) and low probability of intercept (LPI) properties. Since 1980s and early 1990s, though, application of the same in civilian communications has been worked upon. CDMA, based on spread spectrum communications technology, has been recognized as a viable alternative to FDMA a...

Spread spectrum communications were originally developed for military purposes to capitilize on their desirable antijam (AJ) and low probability of intercept (LPI) properties. Since 1980s and early 1990s, though, application of the same in civilian communications has been worked upon. CDMA, based on spread spectrum communications technology, has been recognized as a viable alternative to FDMA a...