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77-GHz Waveform Generator with Multiple Frequency Shift Keying for Multi-target Detection Automotive Radar Applications

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Title
77-GHz Waveform Generator with Multiple Frequency Shift Keying for Multi-target Detection Automotive Radar Applications
Author
NGUYEN, NGOC QUANG
Advisor
Bien, Franklin
Issue Date
2015-08
Publisher
Graduate School of UNIST
Abstract
In automotive radar applications, the modulation waveform plays an important role in detecting multiple targets. Two well-known continuous waves in the literature are Frequency Modulated Continuous Wave (FMCW) and Frequency Shift Keying (FSK). These two waveforms basically ful l the requirements of automotive radars. However, two modulations have limitations in multiple target situations. The ghost targets are introduced in FMCW radars, thus two or more measurement cycles are expanded to resolve the target ambiguities. In contrast to that FSK cannot solve targets in range direction. For this reason, the combination of FMCW and FSK was proposed, called MFSK. This waveform shows good performance, with a high range and velocity resolution, short measurement time, and ability to avoid ghost targets. The main drawback of this modulation is the complexity. In this thesis, all the perspectives about MFSK modulation waveform from basic fundamentals to hardware implementation are presented. In addition, the proposed MFSK waveform generator for automotive radar system is elaborated to improve the target detections and shorter measurement time.. . .
Description
Department of Electrical Engineering
URI
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EE_Theses_Master
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QUANG NGOC NGUYEN.pdf Download

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