High resolution imaging with SAR using automotive millimeter wave radars

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dc.contributor.authorLeander, Oskar
dc.contributor.authorPettersson, Viktor
dc.contributor.departmentChalmers tekniska högskola / Institutionen för rymd-, geo- och miljövetenskapsv
dc.contributor.examinerUlander, Lars
dc.contributor.supervisorMonteith, Albert
dc.contributor.supervisorEriksson, Olof
dc.date.accessioned2021-11-15T06:53:08Z
dc.date.available2021-11-15T06:53:08Z
dc.date.issued2021sv
dc.date.submitted2020
dc.description.abstractAngular resolution is currently one of the main limitations in automotive radars used in advanced driver assistance systems (ADAS). This thesis investigates the pos sibility of achieving fine-resolution radar images with a commercial, off-the-shelf au tomotive radar sensor using synthetic aperture radar (SAR). Two imaging algorithms have been investigated and implemented with a Texas Instruments AWR1843 radar system, and the resulting resolution in azimuth has been compared to that of conven tional processing methods. The potential of a side-looking SAR imaging system has been investigated in the ory, in simulations and an experimental system was implemented on an actual moving vehicle. Imaging of various automotive scenarios have been performed, and the image quality of the two algorithms, backprojection and Doppler beam sharpening (DBS), has been evaluated. Simulations and measurements show that the resulting system greatly improves azimuth resolution over the conventional multiple-input multiple output (MIMO) imaging capability of the AWR1843 when in a side-looking mode of operation. The results have helped uncover potential challenges with SAR imaging, such as dynamic scenes and imperfect radar platform motion estimation. The latter problem was overcome using autofocus algorithms. In conclusion, the devised SAR system shows great promise in delivering fine az imuthal information for improving situational awareness in future ADAS functionality using today’s hardware.sv
dc.identifier.coursecodeSEEX30sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/304355
dc.language.isoengsv
dc.setspec.uppsokLifeEarthScience
dc.subjectHigh resolution imaging with SAR using automotive millimeter wave radars, remote sensingsv
dc.titleHigh resolution imaging with SAR using automotive millimeter wave radarssv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
local.programmeCommunication Engineering (MPCOM), MSc
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