It presents a new method for the system calibration in pmp . with a special calibration gauge , both the phase - height mapping and lateral coordinates calibration could be done simultaneously through only one measurement 校准时需要将校准平面进行多次平移，每次平移都需要进行一次测量，而且校准过程中需要保持标准平面的稳定，这些特点限制了便携式测量系统的开发。
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