Real-time RADAR and LIDAR Sensor Fusion for Automated Driving

Devagiri, Rohini; Iyer, Nalini C.; Maralappanavar, Shruti

doi:10.1007/978-981-15-1366-4_11

Cited by 1 publication

(2 citation statements)

References 4 publications

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“…As the OPA technology is getting mature, it has found more applications in the market, such as space communication, autonomous vehicle, etc. [3][4][5][6] However, there is a critical issue that limits its application range, which is the grating lobes due to the large element spacing. Grating lobes are caused by the element spacing in an OPA being larger than half of the operating wavelength [7].…”

Section: Lidar: the Next-generation Radarmentioning

confidence: 99%

“…However, the randomly distributed phased arrays efficiently utilize the design space on the chip, which effectively decreases the required device footprint. Furthermore, as the number of antennas increases, the FWHM of the main lobe in the far-field pattern will decrease in both of the array designs, promoting a better resolution for scanning the moving objects and surrounding environment [4][5].…”

Section: Characterizing Array Performancementioning

confidence: 99%

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Optimization and Modeling for Optical Phased Array

Liu¹

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The rapid growth of technology these years has brought up the demands on LiDAR.Research on LiDAR has shown a higher detecting range, resolution, and detection speed than microwave radar. As the essential component of LiDAR, the optical phased array plays a fundamental role in the beamforming for the LiDAR.Unlike microwave phased array antennas, optical phased array antennas naturally have grating lobes in the radiation pattern due to the large element spacing in the array.The grating lobes are undesirable since they dissipate energy from the main lobe, reducing the power efficiency of the optical phased array. Eliminating and reducing the grating lobes then become a pressing problem to solve. This thesis presents three types of optical phased arrays: the rectangular, circular, and randomly distributed configurations, to achieve the maximum grating lobes suppression. Using a specific antenna design as the base element, we design and optimize three types of the arrays by implementing the genetic algorithm. We conclude that the rectangular phased arrays have a minor performance on sidelobe suppression compared to the other two types of phased arrays. The randomly distributed phased arrays will have a similar performance on sidelobe suppression compared to the circular phased arrays when over 400 antennas are placed, but it utilizes less device footprint.The circular phased arrays utilize the most device footprint, but it has the narrowest 3 dB beamwidth.

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Section: Lidar: the Next-generation Radarmentioning

confidence: 99%

Section: Characterizing Array Performancementioning

confidence: 99%

Optimization and Modeling for Optical Phased Array

Liu¹

View full text Add to dashboard Cite

show abstract

Real-time RADAR and LIDAR Sensor Fusion for Automated Driving

Cited by 1 publication

References 4 publications

Optimization and Modeling for Optical Phased Array

Optimization and Modeling for Optical Phased Array

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