surveillance calibration satellite 监视校准卫星
range calibration satellite 距离校准卫星
satellite calibration 校准卫星 ; 卫星标定
satellite-ground calibration 星地环路校正
Satellite measurements have problems because of calibration changes when they are replaced every few years.
卫星测量方法也有问题，因为每隔几年卫星测量设备更换后，校准就改变了。
The calibration targets are larger than might have been expected, he said, suggesting that the satellite cameras they are being used to calibrate have surprisingly poor ground resolution.
校准目标有可能比预料的要大，他说，这表明被校准卫星上的照相机的地面分辨率是很低的。
The department of satellite design and the staff on the ground have conducted a way of thruster calibration execution in terms of the data of the attitude and the nutation principle.
卫星设计部门和地面工作人员根据卫星的特点，利用姿态数据及章动原理建立了一套标定推力器对称性的方法。
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