一种提高测角精度的线交叉寻峰算法

A Peak Detection Algorithm Based on Intersection of Straight Lines of Position for Improving Angle Measurement Accuracy

为了提高测量精度,提出了一种适用于前后沿对称脉冲波形的线交叉寻峰算法。该算法利用对脉冲前、后沿的采样数据估计直线位置线的参数,并计算2条直线位置线的交点,实现脉冲峰值位置的估计。该方法能有效减小参考点和计数脉冲频率引起的测量误差。由于为线性算法,且对采样率要求低,易于工程实现。计算机仿真结果验证了所提出方法的有效性。

A peak detection algorithm based on intersection of straight lines of position(LoPs)is proposed to improve performance of angle measurement.This method is suitable for pulse waveforms with symmetrical rising and falling edges.The algorithm estimates the parameters of LoPs by sampling data of rising and falling edges of the pulse,and calculates the intersection point of the two LoPs to estimate the peak position of the pulse.This method can effectively reduce the measurement error caused by reference point and counting pulse frequency.It is easy to engineering implementation because of its linearity and low sampling rate.The effectiveness of the method is verified by computer simulation.