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TRS-4D cleared to sail.

Cassidian has completed factory acceptance tests for the company's TRS-4D naval air and surface surveillance radar. The tests were carried out by the company, the Bundesamt fur Wehrtechnik und Beschaffung (Federal Office of Defence Technology and Procurement) and shipbuilder Blohm and Voss Naval on behalf of its Marine (German Navy) customer. The German Navy is acquiring the radar to equip its forthcoming 'F-125 Baden-Wurttemberg' dass frigates. The four F-l25 ships are expected to commission between 2016 and 2018. Germany is acquiring a total of five TRS-4D radars, four of which will furnish the F-l25 ships while the fifth is earmarked for research, development and training on land as well as to test upgrades to the radar and the ships' Combat Management System prior to their installation on the vessel, according to a Cassidian official. It is in fact the land-based system that has completed the aforementioned factory acceptance tests. Delivery of the radar to its site at Wilhelmshaven on the German North Sea coast is expected in February. The second system, which will equip the lead F-l25 ship in the class, the Baden-Wurttemberg, will be delivered by August Site acceptance tests will be performed during the first half of 2015, after which the radar will be cleared for service. All TRS-4D systems will be delivered by 2016.

The TRS-4D is an evolution of Cassidian's TRS-3D. It features a rotating aesa (active electronically scanned array aerial, although the F-125 frigates will have four static antennae located on the superstructure to provide 360[degrees] surveillance(because, according to the official, of both the overall topside design of the Type-125 and German Navy antenna redundancy requirements).

Broadcasting in the low C-band at four-to-six megahertz, the TRS-4D has been developed privately by Cassidian. The radar can scan up to 50[degrees] in azimuth when the antenna is stationary, and from 2 to 70[degrees] in elevation. The employment of a mechanically 30 to 60rpm rotating aesa allows the sensor to perform multi-function air and surface surveillance operations over 360[degrees]. Alternatively, the antenna can be kept stationary with the antenna fixed on a defined segment of space.

The radar has an instrumented range of up to 250 kilometres (135 nautical miles) and a minimum coverage of under 100 metres (328 feet). Targets of under 0.01 square metres radar cross section can be detected with the TRS-4D, with around 1,000 targets being tracked simultaneously. The TRS-4D is supplied with a three-channel integrated identification friend or foe antenna, and its electronic counter-counter measure performance is enhanced with very low sidelobes and adaptable transmission power.
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Title Annotation:Digest
Author:Withington, Thomas
Publication:Armada International
Date:Feb 1, 2013
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