User's Manual

NETNode
Phase 1 and 2 Units
NETNode
User Manual
NETNode-V2.3
1-1
DS000034 Unclassified
1. Introduction
Cobham Surveillance domo has been supplying point to point high data rate digital video
links for many years to security users. These links exhibit exceptional performance, enabling
users to reliably exchange video data in extremely difficult RF transmission environments
such as mobile links and links in dense urban areas. More recently domo has seen an
increasing requirement to use the rugged transmission capabilities of COFDM to carry
general purpose IP traffic.
There is now also a growing demand from domo customers to incorporate bi-directional
capability in its solution, and also a MESH capability.
The traditional two frequency approach (Frequency Division Duplex or FDD) to enable bi-
directionality is not convenient or appropriate in many applications; the use of separate
frequencies makes frequency management difficult. Also FDD adds complexity, cost and
weight with additional antennas, amps and circuitry.
The solution to this problem is a single frequency approach (Time Division Duplex or TDD)
where all communicating nodes share the same frequency. This simplifies frequency
management and circuitry implementation.
1.1. MESH Applications
 Rapid deployment temporary surveillance
 Mini and Micro UAV communications.
 Radios to connect surveillance team vehicles.
 Special Forces data radios.
 Military vehicle radios.
 True real time surveillance / pursuit where an ad-hoc network is used relay imagery in a
fluid environment. This would apply equally to manned surveillance as to vehicle pursuit.
 Next generation Unmanned Ground Vehicles (UGVs) where vehicles operate co-
operatively.
 FIST battlefield communication applications.
 Perimeter security applications.
Each MESH NETNode has two Ethernet interfaces to allow flexibility of connection. This, in
conjunction with the radio link, provides the same functionality as a switched Ethernet hub.
The radio technology is based on the fundamentals of the acclaimed domo Solo4 rugged,
robust and reliable transmission system giving an extremely secure and easily deployable bi-
directional communication system.
AES BCRYPT1 encryption/decryption (AES128 & 256) is also supported on both forward and
reverse paths of the MESH system. AES support is an optional software feature and may
require an export license.