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).
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。
3
The location precision is improved to 1/3 pixel by performing sub - pixel edge detection in fiducial satellite photo image.