The Martel is an Anglo-French anti-radiation missile (ARM). The name Martel is a contraction of Missile, Anti-Radiation, Television, referring to the guidance options. There are two variants, the passive radar guided (AS 37) and the video guided (AJ 168). The UK has used both types, the French only the radar-equipped variant. The Martel fuselage forms the basis for the Sea Eagle anti-ship missile with a turbojet to improve range, while the French used it to develop ARMAT, an advanced ARM missile in the '80s. For ARM functions, the RAF adopted a totally new missile, much smaller, the ALARM.