sub-satellite point [航] 卫星星下点 ; [天] 星下点
sub-satellite track 星下点轨迹
sub-satellite point parameters 星下点参数
flight experiment sub-satellite 飞行实验子卫星
sub synchronous satellite 分同步卫星
sub-regional andean satellite system 安第斯次区域卫星系统
fire satellite communication sub-system 消防卫星通信子系统
Microwave plasma thruster (MPT) was applied to the sub system of DFH 3 satellite to complete its orbit transfer (OT) and north south station keeping (NSSK).
将微波等离子推力器(MPT)应用于“东方红三号”(DFH 3)卫星的推进子系统，完成其轨道转移和南北位置保持任务。
The failures of small satellite are divided into three levels: sub system level, system level and outside system level, and the failures in system level are processed by housekeeping software.
它将小卫星的故障分为分系统级、系统级和系统外部级三种，并由星务管理软件处理系统级故障。
The location precision is improved to 1/3 pixel by performing sub - pixel edge detection in fiducial satellite photo image.
采取对基准图卫片中特征进行亚像元精度特征定位的方法，可以将匹配精度提高到1／3个像素以内。
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