CAJ | 학술논문

将Lissajous 标定技术应用到相移干涉测量的相移算法(PSA)中，提出一种基于Lissajous标定技术的随机相移误差校正算法。该算法不需要计算各帧干涉图之间的实际相移量，直接用Lissajous标定和椭圆拟合的方法计算相移算法的相位提取误差(包括离焦、偏倚、相移量偏差)然后进行校正。数值模拟结果表明：该算法不需要迭代运算就能从大于3帧的带有随机相移误差的干涉图中有效恢复出正确的相位信息，运算时间少，计算精度高并且适合于所有的相移算法。实验结果表明：基于Lissajous标定技术的随机相移误差校正算法与现有的迭代随机相移算法(AIA)精度相当，但计算速度得到明显提升。
장Lissajous 표정기술응용도상이간섭측량적상이산법(PSA)중，제출일충기우Lissajous표정기술적수궤상이오차교정산법。해산법불수요계산각정간섭도지간적실제상이량，직접용Lissajous표정화타원의합적방법계산상이산법적상위제취오차(포괄리초、편의、상이량편차)연후진행교정。수치모의결과표명：해산법불수요질대운산취능종대우3정적대유수궤상이오차적간섭도중유효회복출정학적상위신식，운산시간소，계산정도고병차괄합우소유적상이산법。실험결과표명：기우Lissajous표정기술적수궤상이오차교정산법여현유적질대수궤상이산법(AIA)정도상당，단계산속도득도명현제승。
An algorithm of correction of random phase-shifts error is proposed by applying Lissajous calibration technology to PSI. Proposed method does not have to calculate the true phase shifts of each interferogram, which directly estimate the phase extraction error (typically a non linear combination of offset, bias, less of quadrature) of PSA first and then correct them. Simulation results show that proposed method can effectively correct the phase extraction error from a series of (>3) interferograms with random phase-shifts errors without any iterations. The algorithm is fast, accurate and adapt to all kinds of PSAs. Experimental results indicate that proposed method has a comparative precision with AIA but is far faster than AIA.