73Military Technology · MILTECH · 9/2013

users along with simultaneous data throughputis secured via AES 128 and is guided to therecipient via a masterless ad hoc network. Datais sent via three methods; SA data with anti-collision moving around the battlefield in a sep-arate network, low speed data for small datafiles over a voice channels and broadcast dataused for larger data and is sent at a higherspeed.

The core Selex Elsag Personal Role Radio(PRR) remains a universally usable 2.4GHzradio with a power output of 50mW andsecured using spread spectrum technologyputting its voice communications into a bram-ble bush of noise that protects it from enemyeavesdroppers. While the basic radio hasfound over 30 users worldwide and 350,000radios produced to date, a number of improve-ments have still been provided. These includeencryption and the unblocking of its inherentdata capability.

With MAINGATE, Raytheon and DARPA aredeveloping a new radio and MANET capabilitythat has adaptive data rates of 300kbps to10Mbp. Here, GATEWAY translates local net-work data to IP for interoperability. The networkis designed to be fault tolerant with the radiodropping in and out of the network with outageof up to 300 seconds. The network can alsosupport over 20 video streams, as well as voicedata and chat network in the field.

To meet the requirement of the imminentRIFLEMAN Radio competition in the US, anopen competition is expected to see General

Dynamics and Thales compete against eachother as well as offerings from Exelis andHarris.

Aselsan’s Soldier Radio operates in the 480-400MHz band with output power of 100mWand weighs just 360g with a throughput of19.2knps. It is in operation with Turkey,Northern Cyprus and Azerbaijan and was test-ed by Pakistan.

Aselsan’s SDNR Family (Handheld, MAN-PACK, Vehicular and Base Station) is able to

provide seamless communications among tactical users through secure voice, data andvideo. The SDNR ensures increased surviva -bility against Electronic Warfare (EW) threats byproviding alternative communication meansover a wideband ranging from 2-30 MHz HF to30-512 MHz V/UHF. Software configurablearchitecture enables various tactical radiowaveforms and advanced EPM techniques onthe same platform.

Aselsan’s new HF radio equipment has beendeveloped as a part of the SDNR developmentprogramme. The radios cover the HF band ofthe frequency spectrum and provide digital

DSEi FOCUS

Aselsan’s digital intercom system. (Photo: Mönch / DPM)

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74 Military Technology · MILTECH · 9/2013

secure voice and data communication capability to the military users in land, naval andairborne platforms.

The development in digital technology hasenabled the use of complex digital modulationtechniques, where advanced coding and errorcorrection algorithms have been applied toovercome HF channel difficulties such as fad-ing, multipath and interference inherent with theanalog HF radios. Use of SDR architecture inthe HF radios has enabled interoperabilitybetween all forces by the use of the new digitalSDR HF waveform.

HeadsetsMost military communication is on some of

the most severe battle environment, therebystraining the hearing of soldiers. One can find a

lot of vendors for quality, state-of-the-art mili-tary rugged noise-cancelling handsets andheadsets, and compiling them all would defi-nitely go beyond this article. Here are some ofthe most recent innovations in this field.

Invisio has, through its US distribution part-ner TEA Headsets, received an order from theUS Army for the INVISIO V60 communicationsystem. The total order value is approximatelySEK7.1 million. The products will be deliveredduring the second half of 2013.

“We have through our partnership with TEAHeadset built a strong position in the U.S. dur-ing the last ten years and are well establishedamong the very demanding users within thevarious parts of the US Army. The new orderillustrates this well as it includes several EODunits within the US Army. The US market is veryimportant to us and it is pleasing that we con-

tinue to strengthen our position there,” saidLars Højgård Hansen, CEO of INVISIO to MT.

The INVISIO V60 Communication System isan advanced tactical communication and hear-ing protection system for modern militaryforces. With INVISIO V60 the user gets a verylight, compact and flexible communication sys-tem with built-in hearing protection and full360° situational awareness. The system pro-vides crystal-clear communication even in themost extreme and noisy conditions.

Esterline Racal Acoustics products are spe-cially tailored to military, paramilitary and firstresponder markets. While these defined marketsegments share many fundamental require-ments, they each also have unique operationalissues. Racal Acoustics addresses these needsthrough product features tailored specifically tomeet the exact end-user application.

Racal Acoustics products supplied to themilitary give the operator systems designedspecifically to protect hearing and enhancecommunications in very high ambient noiseenvironments such as armoured vehicles andaircraft, as well as for dismounted troops. Thisincludes headsets; in-the-ear, lightweight,medium and high noise handsets and micro-phones; press-to-talk systems; avionics; andfield communications.

At DSEi 2013, Esterline Racal Acoustics willbe fielding the Binaural RAPTOR 25, improvingon the massively successful RAPTOR headset.Innovations here include, binaural capable towork with the most advanced intercoms; EMCexceeding MIL-STD-461F for use with the mostpervasive RF systems; full immersion protec-tion increasing its operation in the harshest ofwet climates; and all component partsredesigned to increase robustness andperformance.

DSEi FOCUS

Persistent Systems’ WAVE RELAY – A True Lifesaver in Operations

WAVE RELAY is an advanced mobile ad hoc networking (MANET) solution that goes beyondthe standard “self-forming” and “self-healing” mesh network. Instead, WAVE RELAY quicklyand continuously adapts to fluctuations in terrain and other difficult environmental conditions tomaximise connectivity and communication performance. The WAVE RELAY proprietary routingalgorithm allows users to incorporate vast numbers of meshed devices into the network inwhich the devices themselves form the communication infrastructure.

Persistent Systems’ WAVE RELAY is a MANET designed to maintain connectivity on themove. It is a scalable, peer-to-peer network which provides data, video, and voice even in themost challenging applications. With user throughput of 37Mbps UDP and 27Mbps TCP, WAVERELAY provides a dynamic, reliable, and secure wireless networking solution beyond mesh.

The Gen4 (MPU4) is a compact radio designed for installation or user-worn applications.Seamless Layer-2 Ethernet connectivity facilitates plug-and-play operation of cameras, videoencoders, IP sensors, and other devices. The device is easily integrated into avionics bays,vehicles, machinery, and other third party systems.

A MANET is a collection of mobile devices (often referred to as „nodes“) that form a self-con-figuring network. The devices communicate wirelessly by relaying data across the networkthrough a sequence of transmissions. In a true MANET, such as WAVE RELAY, every node cancommunicate with every other node enabling true peer-to-peer connectivity. This is in markedcontrast to the far more common mesh network design, in which a series of stationary accesspoints connect end users only to the Internet. The WAVE RELAY MANET is designed to main-tain both peer-to-peer routes and connectivity to an Internet gateway while under mobility. Thesystem detects changes in connectivity and, using a revolutionary routing protocol, elegantlyadjusts the pathways in order to maintain the most efficient route between them.

WAVE RELAY Gen3 and Gen4 Man Portable Units (MPUs) are available with an optional 2WS-Band Radio Module that greatly extends range and provides great performance. In dismountapplications where small antennas must be employed and body masking degrades perfor-mance, the increased transmission power fundamentally increases system performance.

Real-world testing has demonstrated that Persistent Systems’ 2W module delivers up totwice the range of standard 600mW radios.

WAVE RELAY radios offer a fully integrated Push-to-Talk (PTT) Voice capability. Unlike tra-ditional voice radios, the WAVE RELAY system enables voice communication to traverse theentire MANET, greatly extending range and improving robustness. The PTT Voice capabilityenables the user to monitor up to 16 talk groups (channels).

Aselsan’s handheld SDNR Family is able to provide seamless

communications among tactical usersthrough secure voice, data and video.

(Photo: Mönch / DPM)

Elbit Systems’ SDR-7200 is part of the IDF’s plans for the Digital ArmyProgramme network.(Photo: Elbit Systems)

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