天罡星下凡 Born To Raise Hell
卫星星下点 [航] sub-satellite point ; satellite nadir point
星下点 [天] Sub-Satellite Point ; substellar point ; subastral point ; substellar point subastral point
在摩羯星下 Under Capricorn
流星下的愿 Coverists Xinlidege-Jamestannn ; Wish Beneath a Shooting Star
星星下凡 The Stars Look Down
星下点轨迹 track of subsatellite point ; [航] subtrack ; Subsatellite Track
天上星星下凡来 Hope of Delight
下次卫星下一卫星 next constellation
轨道维持的任务是将卫星的星下点轨迹保持在设计的参考轨迹附近。
The ground tracks of satellites required for mission should be maintained close to those of reference orbits over the lifetime of satellites.
阐述了基本轨道应用分析理论,包括星下点轨迹计算、可见性分析、覆盖评估和轨道寿命估算。
Expatiated on the application theory of basic orbit, including subastral point calculation, visibility analysis, coverage evaluating and spacecraft life-span estimate.
位于类gps卫星星座时,与中轨道探测器探测星下点基本相同,不会影响光辐射辐照度的探测和爆炸当量的确定。
Detection of the irradiance and the power would not be effected when the detector on the ISGO or similar GPS constellation.
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