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- W3216904227 abstract "Characterized by its compact structure and fast response, the rotational double prisms system is broadly applicable for high-precision pointing and tracking. In particular, closed-loop tracking technology based on an image detector can overcome beam deflection errors caused by prism parameter and target-guiding errors. However, the rotations of each prism affect beam deflection angles in both the x- and y-directions by different amounts in different areas. Therefore, aimed at this problem of the tracking error being coupled to the rotation angle of the two prisms, we proposed a real-time sector selection closed-loop tracking method by inputting error value feedback from the detector and outputting the adjustment values of the prisms. This method can simultaneously close-loop the error signal in two directions and is not limited by the target distance. We established a test platform to verify the proposed method. The test results showed that the proposed method can continuously track moving targets across different areas of a field of view for an extended period. When the maximum moving speed of the target was 0.32 deg / s, the root mean square tracking error of the noncentral area was <1 arcsec. The simulated and experimental results confirmed the effectiveness of this method." @default.
- W3216904227 created "2021-12-06" @default.
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- W3216904227 date "2021-11-29" @default.
- W3216904227 modified "2023-09-26" @default.
- W3216904227 title "High-precision closed-loop tracking of moving targets based on rotational double prisms" @default.
- W3216904227 doi "https://doi.org/10.1117/1.oe.60.11.114107" @default.
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