Calibration Techniques for Inertial Navigation System Based on Platform and Regular Hexahedron

To solve the calibration problem of laser strapdown inertial measurement unit(SIMU) under the field condition,on the basis of analyzing the SINS error parameters observability in a single position,a new field calibration method based on a platform and regular hexahedron is brought forward,which counteracts the symmetrical position error by turning the regular hexahedron,obtained the attitude information in alignment,and calibrates accurately gyro drift and accelerometer bias.At last,the simulation is made which proved the analysis results,and this program has some practical value.