Optimization design of domestic main control signal processing board for miniaturized fiber optic gyroscope

The signal processing circuit of the fiber optic gyroscope adopts a digital closed-loop processing scheme. It modulates the Y-waveguide integrated optical device through a D/A converter and its amplification circuit and demodulates the optical signals containing angular rate information via the detector signal processing circuit and A/D converter. The angular rate sensed by the fiber optic gyroscope is then calculated by a digital signal processing logic chip FPGA. Traditional fiber optic gyroscopes predominantly use imported components such as operational amplifiers, FPGAs, and A/D and D/A devices. In response to the urgent demand for gyroscopes with specific sizes and 100% domestic production, and with the gradual maturity of domestic integrated electronic components, the optimized design of the main control signal processing board, component selection, and the comprehensive application of flexible lamination technology have ensured that the accuracy and performance of the fiber optic gyroscope are maintained even with full domestic circuit production and reduced size.