A self-reference sextant

Abstract

The invention discloses a self-reference sextant. The self-reference sextant comprises a mechanical sextant, a movable mirror tilt angle sensor, a fixed mirror tilt angle sensor, an information processing system, a display unit, a communication interface, a host computer application system, a control system and a power supply system. The movable mirror tilt angle sensor is used for sensing a tilt angle of the mirror face of a movable mirror of the mechanical sextant, the fixed mirror tilt angle sensor is used for sensing a tilt angle of the mirror face of a fixed mirror of the mechanical sextant, the information processing system collects tilt angle information from the two tilt angle sensors in real time and processes the collected information according to a control instruction from the control system, the display unit dynamically displays the processing results of the observed information, the host computer application system exchanges information with an automatic angle measurement integrated device through a communication interface and calculates results and the power supply system provides power for the whole self-reference sextant. The self-reference sextant does not influence the original use of a navigation sextant, is independent of water-sky line observation and greatly improves positioning opportunity, positioning precision and an automation degree.

Description

Technical field [0001] The invention relates to the technical field of navigation measurement, in particular to a self-reference sextant. Background technique [0002] At present, despite the continuous development of modern navigation technology, due to its independence and high reliability, the marine sextant has been used as one of the bottom-guarantee means for naval and ship navigation, and there is no better equipment to replace it. However, traditional marine sextants have the following shortcomings in use: observations rely on water antennas, and positioning can only be observed within a short period of time in the morning light and dim shadows, and positioning opportunities are severely limited. Once an emergency occurs, it is difficult to use the sextant. Autonomous navigation performance; long positioning time (observation time is measured separately, observation data is manually recorded, observation results are manually drawn), and the observation ship position canno...

AI Technical Summary

Problems solved by technology

However, the traditional nautical sextant has the following disadvantages in use: the observation depends on the water antenna, and the positioning can only be observed in a short period of time in the morning light and twilight, and the timing of positioning is severely limited. Once an emergency occurs, it is difficult to use the sextant The autonomous navigation performance is very high; the positioning time is long (the observation time is measured separately, the observation data is manually recorded, and the observation results are manually drawn and calculated), and the observation ship position cannot be given in time; the positioning accuracy is low, and the positioning results are greatly affected by the individual observation skills of the testers. , cannot meet the high-precision positioning requirements in special cases

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