论文部分内容阅读
通过EGM2008地球重力场球谐模型生成某区域重力扰动图,建立重力扰动情况下捷联惯性导航系统误差模型,仿真验证重力扰动的水平分量对捷联惯性导航误差的影响,结果表明:重力扰动的水平分量引起的捷联惯性导航系统的水平位置与速度误差以舒拉周期进行振荡,重力扰动为12.5×10-5ms-2时,位置误差达160 m。
The gravitational perturbation diagram of a certain area is generated by using the spherical harmonic model of the Earth’s gravitational field in EGM2008. The error model of the strapdown inertial navigation system under gravity disturbance is established. The effect of the horizontal component of the gravity disturbance on the strapdown inertial navigation error is verified. The results show that: The horizontal component of the strapdown inertial navigation system horizontal position and velocity error Shura cycle oscillation, the gravity disturbance of 12.5 × 10-5ms-2, the position error of 160 m.