1·Using UD decomposing to modify EKF Particle filter was imported into the navigation scheme based on the measurement of elevation Angle of star.
用UD分解改进EKF粒子滤波算法，并将其应用于基于星光仰角测量的探测器自主导航方案。
2·Then the plan is to give the spacecraft some rotational stiffness about the Y axis so the elevation angle can be controlled easily.
接下来会有一个关于Y轴转动刚度的计划给航空器好让仰角就可以很容易被控制。
3·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。
4·The improvement of predicting error is mainly due to introduction of general normalized elevation angle function.
引入通用归一化仰角函数是改善预报误差的主要原因。
5·The main parameters of the satellite TV signal receiving antenna positioning are the azimuth, the elevation angle and polarization angle.
卫星电视信号接收天线定位的主要参数是方位角、仰角和极化角。