Non-orthogonality of three-axis magnetic sensor is a hotspot of weak magnetic research in recent years, and also an obstacle that interferes the increase of magnetic sensor's precision.
三轴磁传感器非正交性是近年来弱磁方面研究的一个热点，也是困扰磁传感器精度提高的一个障碍。
Due to non orthogonality of signature sequence, performance of linear detector is much less than that of the optimum detector that is nonlinear.
最佳多用户检测器是非线性检测器，特征码不完全正交时，线性检测器很难逼近最佳检测器。
New method of parameter estimation for time varying non linear distributed systems is proposed in term of orthogonality of orthogonal polynomial and differential operation matrix.
利用正交多项式序列的正交性及微分算子矩阵，论述了时变非线性分布参数系统参数估计的正交多项式法。
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