科研活动
论文名称
An Efficient Method to Process the Quantized Acoustoelectric Current: Wavelet Transform
发表刊物
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
发表年度
2011
论文作者
袁 辉、高 洁、郭华中等
承担单位
电子所
收录情况
关键词
摘要
We present a wavelet-based approach to process experimental data of the quantized acoustoelectric (AE) current, which offers the possibility of a quantum standard of current. To obtain the optimal denoising performance at the acoustoelectric current plateau, a new method is proposed to choose wavelet parameters, such as wavelet functions, levels of decomposition, and thresholding techniques. This method ensures that AE current features are completely preserved, whereas noise is removed as effectively as possible. The denoised results indicate that the accuracy of the AE current can effectively be improved by employing the proposed scheme.