star illuminance

Comparisons of Autonomous Orbit Determination Methods for Spacecraft Using Starlight Refraction;

星光折射航天器自主定轨方案比较

Four-pointed or six-pointed star sometimesKGcan be seen in a spinel, but it is rarely reported that there are multiple groups of asterism on the same spinel.

利用常规宝石学技术、拉曼光谱技术和电子探针对具有多组六射星光和四射星光效应的尖晶石进行了研究,发现由于存在多组定向排列的针状包裹体,使尖晶石产生多组星光效应。

In this article, the spinel with both four groups of six-pointed star and three groups of four-pointed star have been studied by means of conventional gemmological techniques, Raman spectroscopy and electron probe.

常见尖晶石有六射或四射星光。

An autonomous navigation scheme is designed by using the star sensor and horizontal instrument to observe the elevation angle of star.

利用星敏感器和地平仪测量"星光仰角",进行自主导航方案设计。

Autonomous Orbit Determination by Stellar Refraction for Spacecraft;

基于星光折射航天器自主轨道确定

In this technology,the space reference of constellation is obtained by using stellar refraction to provide absolute position information of all or .

该技术可以有效地将星光折射和星间观测两种方法结合起来,利用星光折射提供星座中成员卫星的绝对位置信息,给出星座的空间基准,再利用星间相对观测,约束星座的几何结构,提高星座的整体的导航精度。

Based on the analysis and reasoning of the star observation from carrier in low altitude and high altitude,a optimal star selection arithmetic of the celestial positioning is brought forward based on the spherical astronomy.

航天器高动态星光定位实验室仿真的前提是确定视场内的恒星,以便进行后续的星图模拟、星图处理和定位解算。