叙述了强抗干扰型正弦调制式半导体激光有源干涉仪（Ｌａｓｅｒｄｉｏｄｅａｃｔｉｖｅｉｎｔｅｒｆｅｒｏｍｅｔｅｒ）的工作原理。它比目前的半导体激光有源干涉仪的抗干扰能力提高了５０％。还给出了各种实验结果。 Describes the working principle of strong anti-interference sinusoidal modulated semiconductor laser active interferometer (Laserdiodeactiveinterferometer). It is up to 50% more resistant to interference than current semiconductor laser active interferometers. Also given a variety of experimental results.