azimuth pedestal 中文意思是什麼
azimuth pedestal
解釋
測量方位角機械底座-
At present mounts of optoelectronic measurement system have mainly two kinds of frame, i. e. altitude - azimuth form and equatorial form. the vast majority of large telescopes built are of an altitude - azimuth pedestal design in order to track fast moving satellites
陸基型光學測量設備目前主要採用地平式和極軸式兩種結構模式,由於地平式系統成本低,軟硬體成熟度和工作可靠性高等原因,在觀測人造衛星的儀器中絕大部分採用地平式裝置。 -
That is, the occasional situation where the object of interest passes directly overhead ( 90 zenith pass ). azimuth axis must rotate nearly 180 ? instantly. therefore, the standard two - axis altitude - azimuth pedestal will be unable to remain pointed at the object through the zenith pass event
所謂天頂盲區問題是指目標過天頂時對地平式設備方位軸有一個極大的過載要求,需要方位軸瞬時調轉180 (或略小於180 ) ,此時方位變化的角速度和角加速度在數學意義上是無窮大,導致目標丟失。
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