Method for determining a calibrated true north azimuth, method for laser communication, laser alignment system
By calculating and calibrating the target azimuth and elevation angles of the laser communication equipment, and performing magnetic declination calibration, the problem of large laser alignment errors in traditional methods is solved, and high-precision laser communication alignment is achieved.
CN122345831APending Publication Date: 2026-07-07SHANGHAI QLOONG TECHNOLOGY CO LTD +2
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI QLOONG TECHNOLOGY CO LTD
- Filing Date
- 2026-05-07
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Traditional laser alignment methods for laser communication equipment struggle to calibrate the initial azimuth to true north, resulting in large alignment errors and reduced accuracy between laser communication devices.
Method used
By acquiring the coordinate data of the local and target devices, the target azimuth and elevation angles are calculated, and magnetic declination is calibrated to generate a calibrated true north azimuth. Combined with coarse and fine pointing operations, the alignment accuracy is improved.
Benefits of technology
It significantly improves the alignment accuracy and efficiency between laser communication devices and reduces the impact of environmental interference.
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Figure CN122345831A_ABST
Abstract
The present disclosure relates to a method for determining a calibrated true north azimuth, a method for laser communication, and a laser alignment system. The calibrated true north azimuth is used for an alignment unit of a laser communication terminal, the laser communication terminal comprising at least a local device and a target device, the method comprising: obtaining coordinate data of the local device and coordinate data of the target device, the coordinate data comprising: longitude, latitude, and altitude; determining a target azimuth and a target elevation of the local device based on the obtained coordinate data of the local device and the coordinate data of the target device; obtaining an alignment date of the local device, so as to determine a true north azimuth corresponding to the target azimuth and corrected by a magnetic declination from a world magnetic field model according to the coordinate data of the local device and the alignment date. The present disclosure can determine a calibrated true north azimuth and perform alignment, thereby improving the alignment accuracy between laser communication devices.
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