在工程干涉度量中获得的干涉图往往信噪比低且不为常值,这给采用条纹细化和拟合方法恢复波面带来困难,并导致较大的测量误差.本文提出的高斯门限法不仅克服了常用技术的不足,简便易行,而且经计算机模拟分析和测试实例分析表明,本法具有很高的精度和可靠性.文中详述了高斯门限的原理、算法,提供了实例分析结果. The interferograms obtained in the engineering interference measure tend to have low signal-to-noise ratios and are not constant values, which makes it difficult to recover the wavefront by using the stripe thinning and fitting method and leads to a large measurement error.The proposed Gaussian threshold The method not only overcomes the shortcomings of the commonly used techniques and is simple and easy to use, but also shows that this method has high accuracy and reliability by computer simulation and test case analysis.The principle and algorithm of Gauss threshold are described in detail, and examples are provided result.