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本文通过对新型四频差动激光陀螺输出信号的分析,给出了一种适应新型四频差动激光陀螺输出信号的检测方法。通过APD和高频低噪声前置放大器实现光电接收,通过集中选频放大电路进行滤波和放大,然后采用模拟乘法器实现自乘检波,并根据该方法设计了实际的检测电路。采用直管四频激光器的背向输出来模拟新型四频差动激光陀螺的输出,对电路进行了实际测试。通过测试,验证了检测电路方法的可行性。
Based on the analysis of the output signal of the new four-frequency differential laser gyroscope, this paper presents a new adaptive detection method for the output signals of the new four-frequency differential laser gyroscope. Through the APD and high-frequency low-noise preamplifier to achieve photoelectric receiver, through centralized frequency selective amplifier circuit to filter and amplify, and then use the analog multiplier to achieve self-detection, and according to the method of designing the actual detection circuit. The direct output of the quadruplex laser is used to simulate the output of the new quad-band differential laser gyro and the circuit is tested. Pass the test, verify the feasibility of testing the circuit method.