High precision low cost starlight simulator

Abstract

A starlight simulator with high accuracy consists of light source system formed by concave lens and surface light source, star atlas analog computer being set with star atlas analog algorithm and basic star table for calculating out mapping positions of each navigation star on liquid crystal display system, frequency divider for dividing said mapping positions to different units, display unit for carrying out directly viewing display, liquid crystal display system for displaying distribution of fixed star, parallel light tube being used to set liquid crystal display system on its focal plane and being used to simulate parallel star light of infinite truly under specific visual field and shaft.

Description

technical field [0001] The invention relates to a high-precision and low-cost starlight simulator, which is suitable for the theoretical method and engineering application technology research of astronomical navigation systems and the performance verification of star sensors. Background technique [0002] With the maturity of autonomous celestial navigation technology, the star sensor with high attitude measurement accuracy is favored. It can be sensitive to star maps at different positions on the position to determine the attitude of the aircraft. However, for the performance test of the star sensor and the software test of the star map recognition algorithm, it is often impossible to take real-time starry sky shooting due to the high cost of aerospace experiments. The starry sky is simulated on the ground through computer simulation technology. At present, the research and development of starlight simulators at home and abroad mainly focus on the accuracy, speed and cost...

AI Technical Summary

Problems solved by technology

Foreign countries are relatively mature in this area, and generally use the navigation star selection method based on starlight angular distance to realize high-precision starlight simulation through expensive high-precision, high-resolution liquid crystal light valves and computer hardware and software technology. Starlight angular distance selection and liquid crystal light valve simulation have the disadvantages of slow starlight simulation speed and high price

At present, many units in China have started early in research and development, but there is still a gap with foreign countries; most of them have imported expensive liquid crystal light valves from abroad to complete starlight simulation, and some units directly use notebooks to simulate star maps

In short, at present, there is no starlight simulator with relatively complete performance and price at home and abroad. The present invention proposes a fast, high-precision, and low-cost starlight simulator.

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