Method for controlling a radar antenna
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsAtle Raestad, Jan-Olov Winnberg, Andreas Mattsson
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Abstract
A method is described for detecting an object with target radar. After the first detection of an object, the antenna is tilted. The original direction towards the object is restored by electronically steering the emitted beam. The beamsteering is obtained by changing the frequency of the emitted signal. Thus, the object may be detected several times on different frequencies. The method is particularly applicable in search and track radars.
Claims3
A method in a target tracking radar installation, for detecting projectiles following a trajectory, said projectiles being fired in rounds from a gun, said method comprising:
- sending a radio signal at a first frequency in a beam towards a projectile from a multi element antenna,
- receiving and registering a signal from the first frequency reflected by said projectile,
- mechanically tilting the antenna;
- compensating for the mechanical tilt by changing to a second frequency of the radio signal;
- and
- sending, receiving and registering subsequent, reflected radio signals sent back from projectiles following said trajectory in subsequent rounds.
Dependencies are inferred from the claim text.