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动态测角应用广泛,技术难度大,利用激光陀螺研制的测角系统具有精度高,测量快,动态响应范围宽等特点。指零仪作为测量中的瞄准指示装置,其快速响应能力及精度尤为重要。首先介绍了利用双光束干涉法设计的指零仪的基本原理与结构组成,然后结合激光陀螺的运用背景分别从光路和电路上分析了研制过程中需要注意的问题,最后,通过实验得到了在较低转速情况下的指零信号,验证了其可行性,为进一步研究高速情况下信号的稳定性提供了基础。
Widely used dynamic angle measurement, technical difficulties, the use of laser gyro developed angle measurement system with high precision, fast measurement, wide dynamic response and so on. Zero instrument as a measurement of the aiming indication device, its rapid response capability and accuracy is particularly important. Firstly, the basic principle and structure of the zero-zero instrument designed by using the dual-beam interferometry method are introduced. Then the problems needing attention in the development of the laser gyro are analyzed separately from the optical and electrical circuits. Finally, The zero-crossing signal at a lower speed verifies its feasibility and provides a basis for further research on signal stability at high speed.