Spinning reticle seekers , Other Engineering

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Spinning Reticle Seekers

A spinning reticle seeker contains a single thermal detector and a spinning patterned disk

- such as the ‘Rising Sun' Reticle.

1606_Spinning Reticle Seekers.png
- consisting of half a disk of opaque material and half a disk with alternating transparent and opaque bars.

If the target hotspot is in the centre of the disk

- meaning that the missile is pointed at the target - the output from the thermal detector is constant.

If the target hotspot is to one side of the centre

- the output is modulated by the bars and zero when the opaque semi-circle covers it up.

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