Based on the theoretical study of formation of the modulated fringes, the holographic analytical method of 3d displacementfield of the measured object is proposed.
在对这种调制干涉条纹的理论研究基础上，提出了被测物体三维位移场的调制光束全息分析法。
2
Off-plane displacementfield on defects can be accurately measured by ESPI. It is fully proved by comparison between experimental results and theoretical results.