In this paper a method of designing and implementing Field Programmable Gate Array (FPGA) digital modulator based on the improved Direct digital Synthesizer (DDS) technology is presented.
提出了一种基于改进直接数字频率合成(DDS)技术的现场可编程门阵列(FPGA)数字调制器设计与实现方法。
The design values of wave - induced bending moments must he first estimated, When the direct structural design method was used for general ship designing, especially for ships beyond mies.
在对常规船舶，特别是超规范船舶，进行结构的直接设计时，首先要对波浪弯矩设计值作出估计。
The direct trial method of designing fuzzy controllers is discussed and a performance-model reference method is presented.
本文探讨了模糊控制器设计的直接试探法，提出了以性能模型为参考的设计方法。
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