It verifies the accuracy of the circuit through the experiment with the experimental oscillogram . we discusses the knowledge of technology of high sensitivity and raise the experiment plan and the practice data which has important means to the c02 communication system of large capacity 本文对高灵敏度信号检测技术进行了深入的研究，提出了具体实验方案、给出实测数据，这对大容量co2大气激光通信系统的进一步工程化、实用化具有一定的指导意义。
