Contra pose the custom addition computer-aided speckle interferometry, which has a poor signal-noise-radio and bad anti-noise capacity, we propose a subtraction computer-aided speckle interferometry.

• 摘要针对传统的加法模式的计算机辅助散斑干涉法抗噪声能力弱、信噪比低的缺点，提出了一种减法模式的计算机辅助散斑干涉法。