电离层电子浓度计算模型中有关太阳参数的计算

Calculating the Parameters that Relate to the sun in Calculation Model of the Ionosphere Electron Concentration

在《中华人民共和国国家军用标准GJB 1925—94中国参考电离层》中,计算一定高度某位置某时刻的电离层电子浓度,常用到此位置此时刻的太阳天顶角、正午的太阳天顶角、日出时刻、日落时刻;然而一定高度某位置的日出日落时刻与地球表面是不同的。将着重解决一定高度某位置的日出日落时刻的计算模型和方法,并通过实例验证了计算模型正确和可行性。阐述了某时刻某位置的太阳高度角、方位角计算。利用中国参考电离层计算了某位置某时刻120 km高空的电离层电子浓度,与《卫星测控手册》中给出的数值是一致的。

In《The national for use by the military standard of the People＇s Republic of China GJB 1925-- 94 Reference ionosphere of China》, to calculate the ionosphere electron concentration of certain high, certain position and certain the time of day, often use solar vertex angle to the position and the time of day, solar vertex angle at noon, sunrise and sunset times. However sunrise and sunset times of the certain position with certain high is different from surface＇ s on the earth. The paper would emphasize to solve the calculation model and method for sunrise and sunset times of the certain position with certain high. And has validated the calculation model by instance, the calculation model is right and can operate. The paper also expatiated the calculation for solar elevation angle and azimuth to certain position and certain the time of day. The paper had calculated the ionosphere electron concentration to certain position and certain the time of day away from the earth surface 120 kin, the result is consilient with the numerical value given in《Satellite Tracking, Telemetering and Command Manual》.