TRS 3207 Crotale
Description of the radar set, tactical-technical characteristics
Figure 1: TRS 3207 Crotale surveillance radar and Crotale co-ordinator unit (1989)
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TRS 3207 Crotale
The TRS 3207 Crotale is a surveillance and target acquisition radar and a missile guidance radar used in conjunction with the Crotale air defense system. There it is used for target acquisition and automatic target tracking, as well as missile guidance. The TRS 3207 is used for air defense against low- and very low-altitude targets in the (V)SHORAD range and is used to protect own forces at close range.
The missile guidance radar operates in the X-band and is a frequency-agile monopulse Doppler radar that has low susceptibility to jamming and deception. The maximum detection range is 18 km. Countering helicopters is effective up to a range of 12 km.
Up to two missiles can be guided simultaneously. A goniometer detects the missile during the launch phase. Thereafter, the missile is guided by the radar on the line of sight and its deviation from the target is continuously calculated, with the deviation in elevation and azimuth between the centerline of the antenna (boresight), the target and the missile.
On Crotale versions up to and including the Crotale 5000, the TRS 3207 is mounted on the launcher, called the firing unit (FU), which contains the radar as well as four guided missiles. The Mirador reconnaissance and target assignment radar is located apart from the FU on a separate vehicle called the Acquisition Unit (AU). It operates in S band. In the newer version of the Crotale family, the Crotale NG (New Generation), both the search and target tracking radars are mounted on one vehicle along with the missiles.
The Crotale air defense system exists in many versions and is deployed in many nations around the world. There is also a version of this radar for use on ships.