.
Cluster AMF. The Cluster 3 (Maritime/Fixed station) and Cluster 4 (Airborne) programs merged to form the JTRS Airborne, Maritime, and Fixed Station (AMF) cluster. AMF will provide SCA compliant airborne, maritime and fixed station JTRS hardware suites for all services enabling seamless connectivity to the GIG. Block 2 will provide for narrowband and wideband requirements, including the JTRS WNW.
JTRS Features
.
Open, flexible, extensible, and modular networks with both Red side and Black side services
.
Well-defined interfaces for third party augmentation
.
Interoperability with other GIG networks (TSAT, GIG-BE) in a coordinated approach across all Services
.
WNW, a self-organizing, self-healing network
Wideband Networking Waveform
Several networking radios exist today, securely moving voice and data between airborne and ground elements. Some examples are the Single Channel Ground and Airborne Radio System (SINCGARS), Enhanced Position Location Reporting System (EPLRS), and Link 16. SINCGARS is a self-organizing, self-healing, IP based network. Data is routed from radio to radio on the net, until it reaches its final destination. SINCGAR’s comparatively low data rate, 500bit/s to 15Kbit/s, while adequate to support a sub network of limited size, cannot adequately connect multiple subnets forming a larger, battlefield internet.
The JTRS WNW, one of many JTRS waveforms, along with a suitably configured JTRS radio, will provide the required broadband backbone to connect subnets such as SINCGARS. A WNW equipped UA, acting as an airborne backbone, would significantly increase the data throughput of a collection of SINCGARS subnets. The WNW threshold data throughput rate is 2 Mbit/s. Its objective throughput rate is at least 5 Mbit/s. WNW will be able to tailor its transmission data rate to match the receiving radio data capacity.
In addition to providing a backbone, linking ground based, battlefield subnets, WNW creates airborne and ship borne extensions to the GIG, supporting free flow of data through a dynamic, adaptable, IP-based wireless network. The WNW routing capability will support constantly changing network topologies as well as radio silent (receive only) nodes.
APPENDIX C - COMMUNICATIONS
Page C-10
FIGURE C-5. JTRS GROUND AND AIRBORNE NETWORKS.
Figure C-5 illustrates a high level view of JTRS enabled ground and airborne networks. Table C-1 provides a summary of WNW features.
TABLE C-1. WNW FEATURES.
Data throughput – Threshold/Objective >2 Mbit/s->5 Mbit/s
Frequency Range 225-400 MHz
Transmission Ranges (kilometers/nautical miles) Air-to-Air 370/200
Air-to-Ground 370/200
Ground-to-Ground 10/5.4
Ship-to-Ship 28/15
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