Algorithm to Estimate Roll Angle with Strapdown Rate Gyros on Non-spin Body
Initial information especially roll angle of integrated GPS/INS guided projectiles will be lost after firing from conventional platforms because firing process often have to bear high overload. An algorithm is deduced according to motion equations and principle of Least Squares Estimation, which can be used to estimate the initial roll angle of projectiles with Inertial Measurement Unit strapped on the non-spin body after launch. Measurements of two lateral rate gyros and GPS velocity are used to obtain roll information imbedded in pitch and yaw axis rate gyros. Performance of this algorithm is analyzed in the presence of various error sources. Simulation results show that its precision can satisfy the preliminary estimation of the roll angle.
Inertial Navigation System Roll Angle Least Squares Estimate Guided Projectile
Hao.ping She
School of Aerospace Engineering Beijing Institute of Technology Beijing, China
国际会议
太原
英文
96-99
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）