Bornholm radar station

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The Bornholm radar station (Flyradarstation Bornholm (FRS Bornholm) and Flyverdetachement Bornholm (FLD Bornholm)) is operated by the Flyvevåbnet of the Danish Armed Forces on the Baltic Sea island for air surveillance . The S-723 radar is a 3D reconnaissance radar system with a range of 500 km.

geography

The station is located in the middle of the island of Bornholm, in a wooded area around four kilometers northeast of Vestermarie . In addition to the central radar of the Marconi system, other antenna systems on the site serve other purposes, such as radio reconnaissance.

history

On May 16, 1955, operations began on the station. Initially, an AN / FPS-8 search radar was operated until 1962, followed by the RV-377 until 1986. The S-723 system has been in use since 1986. The facility has been an important part of the NATO Early Warning System since it was commissioned . It was also used by the Danish foreign intelligence service Forsvaret from the start .

The RAPINT (Recognized Air Picture Intelligence) system on the facility is remote-controlled from the "Air Defense Center West" in Karup . The Allied Command Baltic Approaches (BALTAP), the NATO command for the Baltic Sea accesses , was also located there until 2002 . At the end of 2001, the Danish military leadership decided to keep the location on Bornholm, as remote control of the Martello radar is very difficult and extremely expensive.

Marconi plant

The Marconi-S-723 system works in the D-band (23 cm, 1–2 GHz) and can thus detect movements at great distances. The antenna of the system is a phased array system rotating at six revolutions per minute . It consists of 40 vertically staggered linear heater groups. Each radiator group is fed with RF energy by its own transistorized transmitter module. The transmission modules in turn are fed by a central transmission frequency generator. The vertical beam direction is defined via phase shifter.

Each radiator group has an associated receiver. The outputs of the 40 receivers are combined into six signals to be processed in parallel, which enable assignment to six elevation angle ranges. With the six elevation angle ranges, a Cosecans² diagram is possible up to an angle of a maximum of 20 °. A serial data format is made available by means of a further output, which is used to display the air situation in remote command points. The system works with a pulse repetition frequency of 255 Hz.

Individual evidence

  1. ↑ Radar. In: www2.forsvaret.dk. Retrieved January 16, 2017 .
  2. ↑ FLD 503 - www.nyluftvet.dk. In: 123hjemmeside.dk. Retrieved January 16, 2017 .
  3. ^ Christian Wolff: Radar Basics. In: www.radartutorial.eu. Retrieved January 16, 2017 .

Coordinates: 55 ° 6 ′ 46.5 ″  N , 14 ° 53 ′ 15.1 ″  E