论文部分内容阅读
为了提高光纤陀螺输出信号的精度和实时性,提出了一种适合在数字信号处理器(DSP)上实现的快速算法,该算法不需要传统小波变换中内插和抽取步骤,给出了相应的快速分解和快速重构实现公式,并采用半软阈值作为快速小波变换的重构阈值.实验结果表明:在静态和动态陀螺输出条件下,在TMS320C6713 DSP实现半软阈值快速小波变换处理信号时间比原来降低了一个数量级,而滤波精度与原来相当,并且易于硬件实现,完全满足光纤陀螺高精度和高实时性的要求.
In order to improve the accuracy and real-time of the output signal of optical fiber gyroscope, a fast algorithm suitable for digital signal processor (DSP) is proposed. The algorithm does not need interpolation and decimation steps in traditional wavelet transform, Fast decomposition and fast reconstruction of the realization of the formula, and the use of semi-soft threshold as a fast wavelet transform reconstruction threshold.Experimental results show that: static and dynamic gyro output conditions, the TMS320C6713DSP achieve semi-soft threshold fast wavelet transform signal processing time ratio The original reduced by an order of magnitude, while the filtering accuracy and the original considerable, and easy to implement hardware, fully meet the requirements of high precision and high real-time FOG.