Doppler Influence on Waveform Orthogonality in 79 GHz MIMO Phase-Coded Automotive Radar

被引:41
作者
Overdevest, Jeroen [1 ,2 ]
Jansen, Feike [1 ]
Uysal, Faruk [2 ]
Yarovoy, Alexander [2 ]
机构
[1] NXP Semicond NV, Eindhoven, Netherlands
[2] Delft Univ Technol, Microwave Sensing Syst & Signals MS3 Grp, Fac Elect Engn Math & Comp Sci EEMCS, NL-2628 Delft, Netherlands
关键词
Automotive radar; PMCW; binary sequences; waveform orthogonality; Doppler influences; LOWER BOUNDS; ZERO; SEQUENCES;
D O I
10.1109/TVT.2019.2951632
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Utilization of phase-coded waveforms in automotive MIMO radars for short to medium range applications is studied. Performances of three most-promising binary code families (Gold, APAS and ZCZ sequences) are compared. Design trade-offs of practical implementation of phased-coded waveforms for MIMO radar are analyzed for the first time for a possible future System on Chip implementation. Orthogonality of the waveforms in case of moving targets is analyzed. The implications of the code properties for the Range-Doppler map, as well as the Range-Angular map, are pointed out. Doppler frequency shift impact on such performance indicators as the target peak power and range sidelobe levels in the range-Doppler plane, as well as the range and azimuth sidelobe behavior, and the angular error in the azimuthal plane have been comprehensively studied for the first time. It is shown that the time-staggered transmit scheme with autocorrelation properties only (while introducing azimuthal errors) results in improved performance compared to code division multiplexing with auto- and cross-correlation properties.
引用
收藏
页码:16 / 25
页数:10
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