Large field of view beaconless laser nutation trackingsensor based on MEMS mirror
2020
We propose a laser nutation tracking sensor for beaconless laser
communication, which uses a micro-electro-mechanical system (MEMS) mirror
to achieve high-efficiency and large-amplitude nutation at its resonant
frequency. We derive a new formula for the case of incompletely detectable
optical power in the nutation cycle. In the experiment, we measure the
performance of the sensor in calculating boresight error under three
different nutation radii. Combining with the proposed algorithm for the
new scene, we complete the accurate boresight calculation in the range of
±200µrad, at the nutation radius of 4.9 µm. We trust
that the receiving field of view (FOV) of this tracking sensor can be
further expanded by increasing the nutation radius. The sensor, as
proposed in this paper, will be of constructive help to simplify tracking
systems in the future.
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