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AC Summer 08 WIN-T Online - United States Army Signal Center of ...

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Figure 1. <strong>WIN</strong>-T Inc 2<br />

Enabling Wideband SATCOM<br />

on-the-move communications<br />

By Chris Swenarton, Eugene<br />

Levchenko, Lino Gonzalez, Mark<br />

Lange, Eugene Pedoto<br />

There are several anticipated<br />

operational benefits associated with<br />

implementing high capacity, beyond<br />

line-<strong>of</strong>-sight communications on<br />

mobile tactical warfighting platforms.<br />

These benefits are more<br />

commonly referred to as satellite<br />

communications on-the-move.<br />

These include improvements in<br />

situational understanding, lethality,<br />

survivability, and overall combat<br />

effectiveness.<br />

The Warfighter Information<br />

Network – Tactical Increment 2<br />

program is currently implementing<br />

solutions to enable this capability<br />

using components originally developed<br />

under the <strong>United</strong> <strong>States</strong><br />

<strong>Army</strong>’s KaSAT Development<br />

Program and the Affordable Directional<br />

Antenna and Pointing Technologies<br />

<strong>Army</strong> Technology Objective-Demonstration.<br />

These components<br />

include the MPM-1000 modem,<br />

which implements the Network-Centric<br />

Waveform, as well as<br />

an on-the-move antenna system,<br />

which includes a positioner, feed<br />

assembly, aperture and an inertial<br />

navigation unit. Multiple technical,<br />

operational, and statutory issues,<br />

however, must be addressed in<br />

order to fully realize this vision.<br />

These challenges are discussed<br />

herein, as well as the status <strong>of</strong> their<br />

corresponding solutions. A<br />

roadmap for implementation <strong>of</strong> the<br />

capability in the field is provided, as<br />

well as a forecast for future SOTM<br />

technology evolution.<br />

Technical challenges<br />

There are numerous technical<br />

challenges related to vehicle platform<br />

dynamics, size, weight, and<br />

power constraints, varying radio<br />

frequency link conditions, and the<br />

use <strong>of</strong> layer three networking<br />

protocols, which must be considered<br />

in the development <strong>of</strong> a mobile high<br />

capacity beyond line-<strong>of</strong>-sight<br />

communication system. Each <strong>of</strong><br />

these challenges must be addressed<br />

with a cost effective solution in order<br />

to comply with <strong>WIN</strong>-T program<br />

objectives.<br />

Vehicle platform dynamics<br />

<strong>WIN</strong>-T Increment 2 will deploy<br />

multiple configuration items using<br />

fixed, at-the-halt, and/or satellite<br />

communications on-the-move<br />

terminals. (See Figure 1. Above.)<br />

<strong>Army</strong> Communicator 19

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