digital signal synthesis的意思|示意

The fundamental principle of direct digital synthesis (DDS) is introduced in this paper. Based on signal analysis, the ideal output spectrum characteristic of DDS is analyzed briefly.

对DDS基本原理进行了简要介绍，利用信号分析的方法对DDS理想输出进行频谱分析。

Using hardware digital synthesis method, the signal source generates three phase sinusoidal voltage and current signal.

该信号源中采用硬件数字合成的办法产生三相电压与三相电流信号正弦波。

This paper introduces the successful application of digital synthesis technique to three phase precision power signal source.

介绍数字合成技术在三相精密功率信号源中成功地应用。

The design method of normal frequency standard signal source, which utilizes program control digital wave synthesis technology and achieved by microcontroller was given.

采用程控数字波形合成技术，通过单片微型计算机系统实现了工频标准信号源。

This design construct an sinusoidal signal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.

本设计采用AT89S52单片机，辅以必要的模拟电路，实现了一个基于直接数字频率合成技术（DDS）的正弦信号发生器。

Firstly, a DDS-based method for digital-domain synthesis of time-varying Doppler frequency in dynamic GPS signal is proposed in this dissertation.

论文首先基于直接数字频率合成技术提出了一种能够在数字域内直接合成出动态信号中时变多普勒频率的信号合成方法。