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The Kalman filter theory is introduced and the dynamic error vector equation of the initial alignment is derived at the first.
首先介绍了卡尔曼滤波理论及相关技术，建立了系统卡尔曼滤波的状态方程和观测方程；
The modification efficiency is improved by getting the residual error vector of the major modification vector separated from the measured error vector.
并通过从测量误差向量中分离出主修正向量后的残余误差向量方法提高修正效率。
The algorithm is verified by experiments and the modulator can produce digital modulation signals with good EVM(Error Vector Magnitude) and spectrum mask.
通过验证，所产生的调制信号具有良好的误差向量幅度（EVM）和频谱特征。
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