调制度是已调波的一个重要参数，反映了载波的幅度、频率或相位受低频调制信号控制的程度。调相波经鉴频器检出墹f，再经积分器就可获得调相指数墹mφ。
针对传统调制度轮廓术测量速度较慢的问题，本文提出了彩色双通道投影的调制度轮廓术。
In order to solve the lower measurement efficiency in traditional modulation profilometry, a fast modulation profilometry is proposed based on double color projections.
通过相移技术获取调制度值的调制度三维测量法，不可避免地存在相移误差，从而降低测量精度。
Phase shift error is inevitable in the course of getting modulation value of 3-d measurement with phase shifting technology, and then decreases measurement precision.
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