摘要
由于模拟滤波器设计的限制,几乎所有实际的数据采样中都存在过采样,虽然简化了模拟电路的设计,但却增加了数据处理的难度。为此提出了一种有效减小数据量的抽取方法,给出了其应用及具体算法,考虑了如何避免失真等实现中需要注意的细节,简单介绍了该方法带来的信噪比提高,以及有效采样位数增加等优点。
Due to the limitation of analog filters itself, over-sampling almost exists in all sample systems. This make the analog circuit design easy, however, the difficulty in the digital post-processing is increased. Decimation is proposed to resolve this problem. The design and implementation is given in detail including how to avoid distortion. It discussed the advantage such as improving of SN and increasing of ENOB.
出处
《国外电子测量技术》
2005年第4期34-37,共4页
Foreign Electronic Measurement Technology
基金
国家自然科学基金项目(50176022)。
