SMART-L

SMART-L (Signaal Multibeam Acquisition Radar for Tracking, L band) is a naval long-range search radar from Thales Nederland, formerly Hollandse Signaalapparaten (Signaal).

The phased array antenna has 24 elements; all are used for reception, while 16 are used for creating virtual receiver beams through digital beamforming. The beams' vertical elevation, and compensation for ship movement, is done electronically. Horizontal training is done by mechanically rotating the entire array.

As designed, SMART-L has a maximum range of 400 km against patrol aircraft, and 65 km against stealthy missiles. A software upgrade, Extended Long Range (ELR) Mode, extends the maximum range to 480 km. In 2006 HNLMS Tromp used the ELR Mode to track an ARAV-B missile from 150 km during a US Navy ballistic missile defence exercise.

Specifications

 * Antenna system:
 * Dimensions;, 7,800 kg
 * Number of antenna elements: 24 (16 transceivers, 8 receivers)
 * Number of beams formed: 16
 * Beamwidth 2.2° horizontal, 0–70° vertical
 * Polarization: vertical
 * Frequency: D band (former L band)
 * Rotational speed: 12 rpm
 * IFF system integrated, D band
 * Maximum detection ranges:
 * Stealth missiles: 65 km
 * Patrol aircraft: 400 km
 * Ballistic missiles:1000 km after software upgrade.
 * Maximal numbers of tracked targets:
 * Airborne: 1000
 * Seaborne: 100

Users

 * De Zeven Provinciën class frigate
 * Sachsen class frigate
 * Type 45 destroyer (S1850M)
 * Queen Elizabeth-class aircraft carrier (S1850M)
 * Horizon class frigate (S1850M)
 * Dokdo class LPH
 * Iver Huitfeldt class frigate (selected and under construction)