Military Satellite Communications Learning Sessions
- Attendees will discover the essential characteristics of satellite constellations and examine the basic characteristics and features of both legacy and new SATCOM Systems. Each Learning Session is approximately 90 minutes in length.
Intro and Systems Review
The Introduction and Systems Review class covers the basics of orbits and satellite frequencies. It then covers, with approximately 100 slides, the essential characteristics of the UHF, SHF and EHF satellite constellations. It examines the basic characteristics and features of the legacy Defense Satellite Communications System (DSCS) and the new Wideband Global SATCOM System (WGS) satellites. It examines the basic capabilities of the DSCS to shape antenna pattern coverage to reduce the effects of jamming. It explains their unique payloads and the special capabilities of the Milstar and Advanced EHF systems. Also, it explains the need for and characteristics of the UHF Follow-on and Mobile User Objective System (MUOS). 2 Sessions. Contact Us
SATCOM Link Equations Model
The SATCOM Link Equations Model explains the general model of a communications satellite link from the source, through the terrestrial subsystem, the satellite terminal, and the transmitted waveform to the satellite and the return connectivity. It does so giving the attendee a math equivalent to help him/her understand the characteristics and limitations of communications satellite channels and links. Contact Us
Earth Station Technology
The Earth Station Technology module describes the different types of earth stations used in UHF, SHF, and EHF communications. It then breaks down an earth station and addresses the individual segments, e.g., feeds, antenna pointing and tracking, high & low power amplifiers, and frequency converters. Contact Us
Code Division Multiple Access, Anti Jam, and IP over Satellite
This module examines the fundamental aspects of using spread spectrum techniques, first as incorporated into code division multiple access (CDMA) systems and then to provide protection against jammers. It provides a reinforcing view of the fundamentals of the classical satellite communication system and provides a brief derivation of the fundamental anti-jam equation that relates signal-to-noise ratio to user and jammer signal power and achievable user data rate based on the available satellite bandwidth. Finally, it addresses the issues and constraints relating to the use of the Internet Protocol. Contact Us
Network Centric Workshop
The Network Centric Workshop module looks at the components of what we call the net-centric world. It addresses standards and protocol stacks from a conceptual standpoint with a view of what they mean to the warfighter. It then covers their implementation in LANs and wide area networks and transitions into the dangers of military communications in an IP-driven world. Finally, the module has some math exercises so that the attendees can get a feel for issues such as timeliness and capacity. Contact Us
Commercial Fixed Satellite Systems
The Fixed Satellite Systems module covers commercial communications from its initiation with the U.S. Communications Satellite Act to the current time. It includes discussions of INTELSAT, Eutelsat, MDA, SES, and other major commercial constellations. It highlights the differences between military and commercial systems, which operate on very different baselines. It also covers VSat systems and other domestic initiatives such as DirecTV. Contact Us
Commercial Mobile Satellite Systems and Ka-band
The Mobile Satellite Systems module covers the mobile equivalent of fixed satellite services. It addresses successful mobile companies such as INMARSAT, Iridium, and ORBCOM. The module also addresses the emerging Ka-band systems which are opening the door to substantially greater capacities for commercial and military communications. Contact Us
Mega Satellite Systems
A number of new international satellite initiatives by corporations such as SpaceX, OneWeb, Telesat, Kuiper, and others are planning to remake satellite communications and international internet access. They are high-stakes and high-risk endeavors with unique capabilities and issues related to each proposed constellation. The module addresses the basic design, advantages, disadvantages, and projected success potential of each system. Contact Us
UHF Communications
The UHF Communications Module covers highly mobile communications systems. It traces the foundations of these satellite capabilities and reviews the different access techniques such as demand assigned multiple access which is primarily used in systems that support highly mobile forces. The module also covers the Mobile User Objective System (MUOS) which dramatically increases capacities over the 5 KHz and 25 KHz channels that compose the legacy UHF networks. Contact Us