【摘要】 捷联寻北仪在使用中会受到各种环境干扰的影响,从而削弱有用信号,降低寻北精度。研究了一种测量角速度干扰的方法。首先,定义一个虚拟的数学平台;然后,利用加速度计输出和陀螺仪输出积分计算得到实时姿态角相比较,并采用P I控制器进行反馈控制将数学平台调平;从而把角速度干扰从陀螺输出信号中测量出来。该方法简单实用,能显著提高寻北仪抗环境干扰的能力。更多还原

【Abstract】 When strapdown north finder is used in reality,many disturbances corrupt the useful information and deteriorate the accuracy of the system.The technology of how to measure the angular disturbance is analyzed.First,the virtual,mathematical plane is defined.Then,by comparing the pose which is computed respectively by the output of accelerometer and integral output of gyro, PI controller is adopted to modulate the virtual plane,thus the disturbance can be rejected from the output of gyro.The method is simple and useful and can improve the north finder’s accuracy remarkably.更多还原