A sextant astronomical simulator

Abstract

Provided is a control method of a sextant astrogeodesy simulator. The method comprises the following steps: step 1, initialing equipment, and initializing a calculating unit and a peripheral device thereof; and step 2, entering while cycling, waiting for various interruptions, and entering corresponding interruption service programs according to the different interruptions; and a timer being interrupted, a triaxial compass connection port being interrupted, a GPS module connection port being interrupted, and a display screen dynamically displaying simulated sky images in real time. Through the attitude control of a sextant, and by accurately adjusting the mutual position relation between a perpendicular incident image and a reflection image, the height of a heavenly body is measured, and the purpose of training astrogeodesy skills is realized.

Description

technical field [0001] The invention relates to a virtual reality simulator, in particular to a control method of a sextant astronomical simulator. Background technique [0002] The current observation training of celestial body height mainly adopts the mode of actual observation at sea. In the weather with good visibility, after the ship sails to a certain sea area, the actual observation of the height of the celestial body can be carried out. The trainees firstly carry out the preparatory work before the observation, such as the inspection and regulation of the sextant, the measurement of the index difference, the identification of the stars, etc., and then observe according to the observation method of the height of the celestial body. The real height of celestial body observation is obtained through the observation by the instructor or by using the PDA calculation software, which can continuously calculate the height of the celestial body at that moment according to the...

AI Technical Summary

Problems solved by technology

According to statistics on the implementation of maritime practice in the past five years, affected by environmental conditions such as rainy and cloudy weather or invisible water antennas, it is difficult to carry out astronomical training normally during 69.4% of the sailing time; more than 90% of the effective astronomical periods are only suitable for observing the sun Highly trained, as the main positioning method of astronomical navigation, it is often difficult to carry out the skill training of star measurement and positioning

[0005] (2) Training subjects are restricted by region

But for the observers whose latitude is greater than 25 degrees in the northern hemisphere, the training of observing the high altitude of the sun cannot be carried out at all.

[0006] (3) All-weather training cannot be carried out

Affected by the ups and downs of celestial bodies, the observation of the sun can only be carried out on a clear day; for the observation of the height of the stars, since the star measurement and positioning can only be carried out when the water antenna and the stars are visible at the same time, the time to observe the stars is generally It can only be carried out in the morning light and twilight time, resulting in a relatively short observation time

It is impossible to realize the training that can observe any celestial body at any time

[0007] (4) The talent training cycle is too long and the training cost is too expensive

Due to the relatively simple comparison training method, it is impossible to give specific guidance to the observation steps or actions of the students, and the high efficiency of the training cannot be guaranteed, which makes the training cycle relatively long; because the current altitude observation training is all using field observation at sea, so Fuel, security, equipment maintenance and other expenses are a lot of expenses

Images