|
|||||
|
|
| 改善直接数字合成周期信号频域特性的三种波形序列 | |
| 引用本文： | 田新广,张尔扬,邬书跃. 改善直接数字合成周期信号频域特性的三种波形序列[J]. 信号处理, 2003, 19(3): 274-277 |
| 作者姓名： | 田新广 张尔扬 邬书跃 |
| 作者单位： | 1. 国防科技大学电子科学与工程学院,长沙,410073;北京首信集团研究院,北京,100016 2. 国防科技大学电子科学与工程学院,长沙,410073 3. 湘潭工学院信息与电气工程系,湘潭,411201 |
| 基金项目： | 国防重点攻关项目(0032019)资助 |
| 摘 要： | 本文首次提出三种用于改善直接数字合成周期信号频域特性的波形序列,其中两种序列能够在不改变合成信号幅频包络的前提下提高其频率分辨率,另一种序列可用于波形数据限定的情况下频谱可变信号的合成。文中对三种序列的性质分别进行了推导和实例验证。 |
| 关 键 词： | 直接数字合成 频率分辨率 幅频包络 DFT |
| 修稿时间： | 2002-08-12 |
Three Waveform Sequences for Improving the Spectral Properties of Direct Digital Synthesized Periodic Signals |
|
| Tian Xihguang Zhang Eryang WuShuyue. Three Waveform Sequences for Improving the Spectral Properties of Direct Digital Synthesized Periodic Signals[J]. Signal Processing(China), 2003, 19(3): 274-277 | |
| Authors: | Tian Xihguang Zhang Eryang WuShuyue |
| Abstract: | This paper presents three waveform sequences applied to improve the spectral properties of direct digital synthesized periodic signals. Two of the sequences, can improve the frequency resolutions of the: synthesized signals without changing their spectral envelopes. Another .sequence can be used to synthesize signals of variable spectrum by certain rules with definite waveform data. The frequency-domain: properties of the three sequences are confirmed by DFT deduction and are illustrated with a specific example. |
| Keywords: | direct digital synthesis frequency resolution spectral envelope DPT |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |