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Research on Signal Characterization Analysis and Datum Process System of MMW Passive Detection

Author: XuLi
Tutor: GuoWei
School: Huazhong University of Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: microwave radiometer millimeter wave passive detection wavelet transform digital filter target identification
CLC: TN911.7
Type: Master's thesis
Year: 2005
Downloads: 181
Quote: 0
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Abstract


In this article, after deep researching on simulation signal characterizations of 8mm radiometer output signal in time domain and after wavelet transform, the author tries to interpret the design theory, thoughts, methods and tests of the passive detection signal process system. The author also gives the detail regard in the design and testing course. This article is divided into four chapters. The first chapter explains the characteristics of millimeter wave passive detection, as well as the domestic and international research developments, the key technologies and the developing trends. The author also introduces the objective and mission of the project. The second chapter summarizes the basic theories of millimeter wave passive detection and gives some datum of measuring some specific targets. The third chapter mainly introduces the using of wavelet transform to the analysis of millimeter wave passive detection signals, including the basic theory of wavelet transform, the process of target identification and analysis of the results. The fourth chapter discusses the design course of signal process system of millimeter wave passive detection from the system design to the implement of circuits, including the function of system, the system structure, the filter algorithm and the program of the microcontroller. The characteristics of the microcontroller and the design thoughts of the digital filter are mentioned. At last the author summarizes the work that has been done in this project and gives some suggestions.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Signal processing
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