基于MR/GPS的弹体姿态解算方法研究

捷联安装在弹体上的磁阻传感器在探测地磁矢量的过程中存在探测盲区。在盲区内姿态转换矩阵由于奇异性而造成不可解的现象,对此可借助于GPS测量得到的弹道信息,应用拟牛顿方法来进行姿态解算。通过对实验数据的仿真分析表明：该方法在避开对矩阵求逆运算的同时,能得到与牛顿法相近的收敛速度及求解精度。

Abstract：

In geomagnetism vector detecting,blind areas will be come forth while magnetoresistive sensor is fixed on rocket body strapdown.The posture transformation matrix creates the unsolvable phenomenon in the blind spot as a result of the singularity,which may obtain trajectory information by the GPS measurement,the application of the quasi-Newton method is adopted to solve it.It shows by the data from simulation analysis that this method can obtain the convergence rate and the solution precision close to Newton method,while avoids to matrix inversion operation.

Study of Rocket Body Attitude Solving Method Based on Mp/Gps

In geomagnetism vector detecting,blind areas will be come forth while magnetoresistive sensor is fixed on rocket body strapdown.The posture transformation matrix creates the unsolvable phenomenon in the blind spot as a result of the singularity,which may obtain trajectory information by the GPS measurement,the application of the quasi-Newton method is adopted to solve it.It shows by the data from simulation analysis that this method can obtain the convergence rate and the solution precision close to Newton method,while avoids to matrix inversion operation.