Rosette scanning

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Functional principle of rosette scanning. Can be optimized by moving the missile seeker head in the figure eight.

As a rosette scan a particular target search technologies will Radar -Leitsystemen and optical seekers for tracking missiles designated and other targets. The goal is to obtain a two-dimensional image from a rotating one-dimensional scan.

Here, a narrow antenna diagram (in optical systems the camera) moves quickly in the form of progressively rotating figure eight, which are slightly tilted against each other from scan to scan in order to image the target . The method is used both in search heads and for ground-based guidance systems. In the case of missile seekers, the figure eight is tilted by moving the radar antenna up and down while rotating the missile body during flight. Ground-based guidance systems use tilting and swinging radar antennas.

The process is also used by infrared seekers to reduce the effectiveness of hostile countermeasures ( flares ).

In optical systems that already generate a two-dimensional image, it is used to improve the resolution.

Individual evidence

1. ↑ rosette scan , cf. Craig Deuerle: Reticle Based Missile Seekers . In: Ronald Driggers (Ed.): Encyclopedia of Optical Engineering . CRC Press, 2003 ( p. 2407 in Google Book Search).