Three leica tca1100 laser total stations are utilized to trace and measure the center of the three reflecting prisms . the coordinates of the three targets could be got by translation and rotation of reference - system . 3 激光测量方法：采用三台激光全站仪，动态跟踪并测量馈源舱上三个棱镜中心点的坐标，并通过坐标变换得到馈源舱的位置与姿态。
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There are errors during the measurement for both methods . the wavelet is introduced to de - noise the measured coordinates due to its sensitivity to the white noise on different scales . more precise coordinates of the cabin could be got after de - noise by wavelet 西安电子科技大学博士论文3 .由于立体视觉和激光全站仪测量得到的坐标均有误差，采用小波去噪技术降低测量误差，可更精确地确定馈源舱的位置及运行轨迹。
