The strong interrelationship among exterior elements of linear pushbroom imagery induces normal equation severely ill-posed and least squares value deviated from the true value.
线阵推扫式影像外方位元素间的强相关性，导致法方程病态，外方位元素的最小二乘估计值误差较大。
Generally, a linear least squares problem leads to ihc solution of the so called normal equation.
解线性最小二乘问题时，通常都要解所谓正规方程。
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