A Biaxial Stabilized Optical Fiber Inertial Navigation System
With the rapid development of fiber optic gyroscope(FOG),the FOG strapdown navigation system is wide-ly used in various weapon systems.Aiming to the future equipment development,a biaxial stabilized optical fiber inertial navigation system(BSOF-INS) is proposed to meet the requirements of miniaturization,light-weight,low-cost,and high dy-namic environment adaptability.With the function of carrier angular motion isolating,the strapdown navigation resolving,and the rotary modulation error inhibiting being integrated,the advantages of the platform,strapdown and rotary inertial system are absorbed in the BSOF-INS.Under the same inertial instrument conditions,the accuracy of pure inertial dynamic navigation is improved while smaller volume and mass being achieved.To verify the feasibility of the BSOF-INS,an availa-ble fiber gyroscope inertial stability platform is transformed into the BSOF-INS through the method of"body and inner frame axis stabling+external frame electric locking".Finally,the random vibration navigation test is conducted,and the results show that the BSOF-INS has high dynamic navigation accuracy.
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