建立了合成孔径雷达回波视频信号模型，提出了一种用AWG520任意波形发生器生成SAR回波视频信号的方法，并用这种方法模拟了SAR实时成像的回波视频信号。
The video signal model for synthetic aperture radar(SAR) is set up, and a method to generate echo signals for SAR using AWG520 arbitrary waveform generator is presented.
首先，本文对数字频率直接合成(DDS)技术的特点进行介绍，提出一种基于DDS技术的任意波形发生器(AWG)的改进结构。
First of all, this thesis introduces the features of Direct Digital Frequency Synthesis (DDS) technique and gives a new structure of the Arbitrary Waveform Generators (AWG) base on DDS technology.
为此设计了一种基于多脉冲合成的高精度任意波形发生器，详细地阐述了系统的设计原理，并给出了具体的硬件结构框图。
This paper introduces a design method of arbitrary waveform gene-rator which can gain more precision based on multi-pulses synthesis.
介绍了基于直接数字频率合成技术的双通道任意波形信号发生器。
The double channel arbitrary wave generator based on direct digital frequency synthesis is introduced.
DDS实际上是波形的合成技术，可以输出高稳定度的任意波形。
In fact, DDS is a technology for waveform synthesization that is able to output any waveform with high stability.
DDS实际上是波形的合成技术，可以输出高稳定度的任意波形。
In fact, DDS is a technology for waveform synthesization that is able to output any waveform with high stability.
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