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Initial alignment on moving base using GPS measurements to construct new vectors

机译:使用GPS测量在移动基座上进行初始对准以构造新矢量

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Strapdown inertial navigation system cannot easily implement initial alignment on moving base if without the prior "one shot" transfer from another master inertial navigation system and strict constraints on moving trajectory, because the initial coarse attitude cannot be effectively achieved. In this paper, a novel method using the GPS measurements to assist to solve initial attitude matrix is investigated as coarse alignment. Specific vectors are constructed with GPS measurements and used for attitude matrix computation like in analytic alignment algorithm. Several moving conditions of carrier are assumed to test the new alignment method, and the results indicate that the initial attitude angles can be achieved with small errors, which is suitable for the conventional fine alignment afterward.
机译:如果没有从另一个主惯性导航系统的事先“一发”转移以及对运动轨迹的严格限制,则捷联惯性导航系统将无法轻易地在移动基座上实现初始对准,因为不能有效地实现初始粗略姿态。在本文中,研究了一种使用GPS测量值来解决初始姿态矩阵的新方法,即粗调。使用GPS测量值构建特定向量,并将其用于姿态矩阵计算,就像在解析对准算法中一样。假设在几种载具的运动条件下对新的对准方法进行测试,结果表明初始姿态角可以实现较小的误差,适用于以后的常规精细对准。

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