This invention discloses a method and
system for temperature compensation of
fiber optic gyroscopes. It acquires the
angular velocity output, temperature, and zero-bias drift value under varying temperature conditions, constructs basic features, temporal memory features, and
physical interaction feature vectors, and integrates them into a comprehensive
physical information feature vector. This comprehensive vector is used as input, and the zero-bias drift value is used as the training
label to
train the model until convergence. In the online phase, this comprehensive
feature vector is reconstructed in real time and input into the model to predict the zero-bias drift, correcting the real-time output
angular velocity. The temporal memory feature introduced in this invention quantifies the thermal accumulation history using statistics from a multi-
scale sliding window, eliminating the
ambiguity problem of
thermal hysteresis mapping and significantly reducing computational load. Simultaneously, the
physical interaction feature pre-introduces the nonlinear
product term of temperature and rate of change into the model, decoupling linear and nonlinear errors, breaking through the generalization
bottleneck of traditional black-box models under
small sample conditions, and endowing the model with strong physical
interpretability and extrapolation capabilities.