A method for automatic correction of the direction of the emitted laser beam of a daytime ranging system
By establishing a pointing correction model in the beam splitting laser ranging system, and automatically correcting the daytime laser pointing using nighttime data, the problem of the laser tip being invisible under daytime background noise is solved, and efficient ranging is achieved at all times.
CN122260285APending Publication Date: 2026-06-23YUNNAN OBSERVATORY CHINESE ACADEMY OF SCIENCES
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YUNNAN OBSERVATORY CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2026-05-07
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
In daylight with strong background noise, the beam-splitter laser ranging system has difficulty adjusting the laser tip to the sensitive zone, leading to ranging failure.
Method used
By collecting correction data of the light tip during the nighttime visible period, a pointing correction model is established, and the laser pointing is automatically corrected using the model during the daytime invisible period, including the drive mechanism controlling the reflector to adjust the pointing of the emitted laser.
Benefits of technology
It improves the success rate of daytime ranging and target acquisition efficiency, reduces the uncertainty of manual adjustments, has adaptive capabilities and robustness, and requires no hardware modification.
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Smart Images
Figure CN122260285A_ABST
Abstract
This invention establishes a pointing correction model based on optical structure derivation, and fits the pointing correction model by collecting data in the first time period. In the second time period, the pointing correction model is used for prediction and execution. Thus, in the second time period, the laser pointing can be automatically corrected without relying on real-time light tip images. This solves the technical problem of traditional beam splitting ranging systems being unable to correct pointing under strong background noise during the day because the light tip is invisible. It significantly improves the system's working capability and ranging success rate throughout the day and night. In the second time period, the process of first correcting the laser pointing to the sensitive area according to the model and then fine-tuning the telescope to search for the target decouples the double-blind search problem during the day into a single-variable search problem, which greatly improves the target acquisition efficiency and ranging reliability. It avoids the uncertainty caused by simultaneous adjustment of laser pointing and telescope pointing, and provides a standardized and automatically executed operating procedure for daytime ranging.
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