调制域分析仪新方案的验证及关键部件的研制

【作者】 丁明；

【导师】 周正中；

【作者基本信息】 电子科技大学 ， 信号与信息处理， 2001， 硕士

【摘要】 调制域是由信号的时间和频率两个轴构成的平面域，是对信号进行三维（时域、频域、调制域）测量不可缺少的一个测试域。调制域分析技术是近几年发展起来的一种全新的复杂信号分析技术，它已经在很多领域中成为一种重要的分析技术。这些领域包括：跳扩频通信、抗干扰雷达、电子战（EW）和监视系统、移动通讯、数字通信、压控振荡器（VCO）、锁相环（PLL）、集成电路、数字存储装置、机电系统等。调制域分析仪是国家“九五”军事测量重点预研项目，本教研室师生经过近3年的努力，已成功研制出实用化样机一台，已通过项目鉴定和验收。 本文的目的是对一种新的调制域分析仪方案进行验证。论文以测试误差为主线，分析了普通计数器测频原理及误差，调制域分析仪中关联计数法测频方案及误差解决方法，提出了双相时基计数器测频方案，并对该方案进行了验证。同时，应用集成单片PLL频率合成器，采用两种方案实现了调制域分析仪的关键部件—2.5GHz时基信号源，并进行了相应的测试。 实际测试结果表明双相时基计数测频法达到了预期的效果，为下一代调制域分析仪的研制提供了一种新的技术方案。2.5GHz时基信号源的完成也为将来应用PLL实现高频信号源提供了借鉴。更多还原

【Abstract】 Modulation Domain?(MOD) is a plane domain which is consisted of frequency and time of signals. It is a necessary field to measure signals in three-dimension space of signal (time domain, frequency domain and modulation domain). In recent years 揗odulation domain analysis?offers a unique method for viewing complex modulated signals. 揗odulation Domain Analyzer?MDA) may be used to analyze signal features that include of frequency, time interval and phase versus time. It has a wide range of application in digital communication system, radar and electronic warfare system, mechanical electronic system, etc. After 3 years?effort, our research group has made a practical MDA. The main objective of this paper is to test and verify a new way to measure frequency by three related counters. After analyzing the principle of frequency measurement by one counter in normal electronic instrument and by two related counters in MDA, a new way was put forth. In this way, one counter is used to test event signal, and other two counters are used to test standard signal. At the same time, the key component of MDA-2.5GHz signal has been realized with single-chip PLL synthesizer via two different methods. The practical test result indicates that this new way is feasible and achieves the demand of our task. And realization of 2.5GHz signal helps to the future research of synthesizer with PLL.更多还原