在几公里到几十公里,有合作目标的精密激光测距中,相位法应用最广。以高频信号对连续激光作幅度调制,测量往返传输所带来的相位差,可以得到很高的测距精度。信噪比是影响测程精度的最终极限,而信噪比涉及许多因素,有些往往相互制约。本文分析相位激光测距技术,讨论了发 In a few kilometers to tens of kilometers, with the goal of precision laser ranging, the phase method is the most widely used. High-frequency signals for continuous laser amplitude modulation, measuring the phase difference brought about by the transmission, you can get a high accuracy of ranging. Signal-to-noise ratio is the ultimate limit on the accuracy of the measurement. There are many factors involved in the signal-to-noise ratio, and some often restrict each other. This paper analyzes the phase laser ranging technology, discussed the hair