77 GHz waveform generator with multiple frequency shift keying modulation for multi-target detection automotive radar applications

Quang Nguyen, Franklin Bien, Youngsu Kim, Myungryeol Park
2015 Electronics Letters  
School of Electrical and Computer Engineering Department of Electrical Engineering 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 fulfil the requirements of automotive radars. However, two modulations have limitations in multiple target situations. The ghost targets are
more » ... 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.
doi:10.1049/el.2015.0092 fatcat:dggivhke7fggfnumwkakge736y