한국해양대학교

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DDS를 이용한 X-Band FMCW 레이다의 선형성 개선에 관한 연구

Title
DDS를 이용한 X-Band FMCW 레이다의 선형성 개선에 관한 연구
Alternative Title
A Study on Linearity Enhancement
Author(s)
정준석
Publication Year
2011
Publisher
한국해양대학교 대학원
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002174227
http://repository.kmou.ac.kr/handle/2014.oak/8201
Abstract
The purpose of this study is to propose a DDS-based FMCW signal generation and signal processing system which will improve linearity of FMCW radar. The proposed signal generation system is designed to sweep 9.8GHz~10.44GHz using DDS sweep from 50MHz to 210MHz for 6.4ms. The output power of the signal generating system is about 14dBm. The signal processing unit using 4096 FFT at 10KHz sample frequency is designed to detect the beat frequency. To measure the distance resolution of FMCW radar using the proposed signal generating system, we used delay line cables instead of antenna and circulator. Through experiment of delay line length variation, it is observed that the beat frequency increases linearly along with the length of delay line and the distance resolution of the radar is 3.6cm in a free space.
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전자통신공학과 > Thesis
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