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直接数字合成是近年来出现的一种频率合成的新方法,由于是在数字域内实现的频率合成,因而,它具有易集成、频率分辨率高、频率切换速度快的优点,使这一技术在扩频通信、电子对抗、多普勒模拟等方面的应用有着巨大的吸引力;也正是由于这些应用,推动着这项技术的研究、应用和发展。可以肯定,随着微电子技术的发展,DDS信号源将成为电子工业信号源的主流。
Direct digital synthesis is a new method of frequency synthesis that appears in recent years. Because it is the frequency synthesis realized in the digital domain, it has the advantages of easy integration, high frequency resolution and fast frequency switching speed. Spread spectrum communications, electronic warfare, Doppler simulation and other aspects of the application has a huge attraction; precisely because of these applications, promote the technology research, application and development. To be sure, with the development of microelectronic technology, DDS signal source will become the mainstream of the electronics industry signal source.