Error equation of linearity correction is given;
给出了折半法线性校正误差的计算公式；
According to the error equation of INS, the influence of gravity disturbance is analyzed.
由惯导系统的误差方程分析了扰动重力场的影响。
It can help students to understand the essence and using condition of Ringbom error equation.
它有助于学生搞清林邦误差公式的本质和使用条件。
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