Error Analysis of a Dynamically Tuned Gyro Strapdown Northfider

摘要

To analyze the mathematical error model of a dynamically tuned gyro (DTG) strapdown northfider in detail, guide the process of design, manfacture and adjustment of northifinder. Methods Each error source of this type of northifder was determined, and the influence of each source on northifinding result was formulated. Results and conclusion Under the guidance of the analysis, select releavant method for each source which has different effect of result to reduce northfinding error, a type of northfinder meeting the practical requirement of user was developed.