European defence electronics specialist Airbus Defence and Space (formally Cassidian) has provided ChainHomeHigh with details regarding its planned modernisation of MSSR-2000-I secondary radars for the German Armed Forces.
In November 2013 the company revealed that it will upgrade these radars to so-called ‘Mode-5’ status. This programme will cover the conversion of existing MSSR-2000-Is used by the Luftwaffe (German Air Force), Deutsche Marine (German Navy) and the Heer (German Army) to Mode-5 status. Mode-5, which is employed for Identification Friend or Foe (IFF) tasks is a secure version of the International Civil Aviation Organisation’s (ICAO) 24-bit Mode-S protocol which is used to provide civilian aircraft identification and flight data information for air traffic control. All Mode-5 transmissions are encrypted and provide additional location information using the Global Positioning System satellite constellation.
Airbus Defence and Space has revealed to ChainHomeHigh that the contract to modernise these secondary radar systems which was awarded by the German Federal Office of Bundeswehr Equipment, Information Technology (known by its German acronym BAAINBw) and In-Service Support will initially cover the modernisation of 14 MSSR-2000-I systems in use onboard several German Navy ships, and in service at several airbases around the country.
A spokesperson for the firm confirmed that all of the MSSR-2000-I radars in use with the German armed forces are already Mode-5 compatible, but that the contract awarded in November 2013 will ensure their compliance with the North Atlantic Treaty Organisation’s Standardisation Agreement (STANAG) 4193. STANAG 4193 Parts 5 and 6 cover performance aspects of Mode-5. In addition, the contract also ensures compatibility with the ICAO’s Annex-10 convention on International Civil Aviation which pertains to Aeronautical Telecommunications procedures and Eurocontrol (the European body tasked with developing seamless European Air Traffic Management), European Mode S Station Functional Specification requirements. The spokesperson adds that the contract will see the modernisation of the cryptographic computers equipping the MSSR-2000-I via a software upgrade to enable them to handle Mode-5 traffic to these standards, along with legacy Mode-4 transmissions which provide a three-pulse reply to an encrypted IFF interrogation.
Airbus Defence and Space declined to provide a value for the initial contract saying that it amounted to a “multi-million Euro sum,” although the spokesperson did say that initial platform integration and acceptance will commence in 2014 and conclude in 2015, with the final deliveries of the 14 upgraded MSSR-2000-I systems being completed by 2017. Additional work for the company could include the upgrade of an additional 35 MSSR-2000-I radars operated by the German armed forces in a separate contract, alongside the modification of up to 600 Airbus defence and Space transponders used by the German Airforce to ensure that they are Mode-5 compatible. This too could be awarded in a separate contract.
The MSSR-2000-I works in tandem with Luftwaffe long-range air surveillance radars principally the air force’s four Hughes Air Defence (now Raytheon) HR-3000 S-band (2.3-2.5/2.7-3.7Ghz), its eight Lockheed Martin AN/FPS-117 400km L-band and six Thales GM-406 400-km S-band radars. All these systems feed radar information into the German Air Force’s MiRADNET radar network which supplies similar information into Germany’s civilian RADNET air traffic management network.
One of the key attractions of the MSSR-2000-I family, according to the Airbus Defence and Space, is that the entire radar is housed in a single box. This box is able to plug into any eight-metre (26-feet) antenna, with the whole system connecting to any air traffic control or integrated air defence network, using the ASTERIX radar data protocol.
In terms of performance the MSSR-2000-I family has an instrumented range of up to 613km (331nm), and can detect up to 1,500 targets across a 360º radius, 400 targets across a 45º segment of the sky and 110 targets in a 3.5º segment. Six radars comprise the MSSR-2000-I family including the MSSR-2000-I Mode 5/S 500 Watt and MSSR-2000-I Mode 5/S 1500 Watt single chain systems, the MSSR-2000-I Mode 5/S 2000 Watt variant and the MSSR-2000-I Mode 5/S 500 Watt Dual Redundant radar. This latter product includes two of the single chain 500 Watt interrogators, as does the MSSR-2000-I Mode 5/S 1500 Watt Dual Redundant radar along with the MSSR-2000-I Mode 5/S 2000 Watt Dual Redundant system which has two 2000 Watt single chain interrogators.