从误差建模出发，得到基于相对位置测量的标定参数识别矩阵。
The observation matrix of calibration on relative position measurement is achieved from error model.
利用常用仪器只测量相对位置信息，并基于识别矩阵的非奇异性，通过仿真来选择合适的试验方案；标定试验取得了较好的效果。
The information of relative position is obtained using the universe instruments, and the calibration scheme is acquired through simulation according to the non-singularity of the observation matrix.
阶段 3: 识别支持回答问题的矩阵
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