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自适应原则指出：在构成光学系统时不但要构成测量信号的载体，还要设法实现对于噪声（扰动）实时的或短时间的预报和补偿。基于测量系统的响应函数给出了自适应原则的通用表达式。它可以用来对系统进行分析，决定补偿因子及进行修正。自适应原则可能成为所有精密测量系统设计的一个方法。应用这个方法的先决条件仅仅是噪声影响的相关性，目的是消除噪声对测量的影响。该方法特别适用于１／ｆｎ噪声和低频信号混合的情况。文中同时分析了实现自适应原则所应该采用的控制系统。
The principle of adaptation states that not only the carrier of the measurement signal but also the real-time or short-term prediction and compensation of noise (disturbances) must be implemented in the formation of the optical system. The general expression of adaptive principle is given based on the response function of measurement system. It can be used to analyze the system, determine the compensation factor and make corrections. The principle of adaptation may be a way of designing all precision measurement systems. The prerequisite for applying this method is only the correlation of the noise effects in order to eliminate the effects of noise on the measurement. This method is particularly suitable for mixed 1 / fn noise and low frequency signals. In the meantime, the paper analyzes the control system that should be adopted to realize the principle of self-adaptation.