Measurement method and measurement device for deformation of shock absorber of strapdown inertial navigation system

The invention provides a measurement method and measurement device for the deformation of a shock absorber of a strapdown inertial navigation system, and solves the technical problem that the deformation of the shock absorber caused by temperature cannot be accurately measured. The method comprises the steps of setting disperse temperature nodes within a temperature change section; measuring installation error angles of an inertial measurement unit at the disperse temperature nodes; and comparing the installation error angles of the disperse temperature nodes to quantize the deformation of theshock absorber. By using the difference of the inherent installation error angles along with the temperature change, the change of the objective posture physical quantity is reflected, and thus the effective measurement of the deformation of the transmission medium is achieved. Meanwhile, the effective measurement process of the installation error angle formed by conversion of the change postureof the inertial measuremen