Novel great-circle celestial coordinate system with six regions

Abstract

The invention provides a novel great-circle celestial coordinate system with six regions, which belongs to the field of astronomy basic theories. The building of a traditional celestial coordinate system is related to theories of earth rotation, south and north poles and parallel circles, wherein the parallel circles are small circles, and the problems that longitude in polar regions is difficult to distinguish and a celestial sphere is divided non-uniformly as a longitude plotting scale deforms along with latitude. According to the novel great-circle celestial coordinate system with the six regions, the celestial sphere is divided into six identical regions, each novel coordinate is constructed by a great circle completely, the coordinate relations between each region and an equatorial system of coordinate as well as each region and a space rectangular coordinate are deduced, and formulas of the relation are concise. The novel great-circle celestial coordinate system is defined intuitively, treats six celestial sphere regions equally, can not be influenced by the south and north poles and the parallel circles, is more uniform in region division, does not increase calculation complexity of coordinate conversion, and is suitable for popularization. With the devolvement of the south and north poles and the satellite orbit design, in particular to constant expanding of the deep space exploration filed, the novel coordinate system has potential application value.

Description

(1) Technical field [0001] The invention relates to a new six-zone great-circle celestial coordinate system, which belongs to the field of basic theory of astronomy. (2) Background technology [0002] In 334 BC, in order to draw a "world map", the geographer Nilkus who accompanied Alexander to the east drew a line of latitude on the earth for the first time according to the seasonal and day-night changes caused by the rotation of celestial bodies. Since then, the celestial coordinate system with longitude and latitude as the basic units has stepped onto the stage of history and played a huge role in the development of human navigation and aviation. [0003] Commonly used traditional celestial coordinate systems mainly include the equatorial coordinate system and the ecliptic coordinate system, such as figure 1 , figure 2 shown. [0004] ① Equatorial coordinate system: take the celestial equator as the basic great circle, the vernal equinox as the basic point, and the rig...

AI Technical Summary

Problems solved by technology

[0007] 1. The purpose of the present invention is to provide a new six-zone great-circle celestial coordinate system, which can improve some problems that have always existed in the traditional celestial coordinate system. Scale deformation leads to uneven division of the celestial sphere by longitude and latitude circles. This new celestial coordinate system can improve the spatial uniformity of coordinates

Images