Millimeter wave radar system on a rotating platform for combined search and track functionality with SAR imaging

Aulenbacher, Uwe; Rech, Klaus; Sedlmeier, Johannes; Pratisto, Hans; Wellig, Peter

doi:10.1117/12.2064824

Cited by 1 publication

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“…In this work, they combine LiDAR data, which adds to the computational complexity and delay. In [24], a synthetic aperture mmWave ground station search and track radar is proposed. It has numerous drawbacks, such being large, complicated, and lacking target AoA calculation for rotating radars.…”

Section: Introductionmentioning

confidence: 99%

Localization of Multi-Class On-Road and Aerial Targets Using mmWave FMCW Radar

et al. 2021

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mmWave radars play a vital role in autonomous systems, such as unmanned aerial vehicles (UAVs), unmanned surface vehicles (USVs), ground station control and monitoring systems. The challenging task when using mmWave radars is to estimate the accurate angle of arrival (AoA) of the targets, due to the limited number of receivers. In this paper, we present a novel AoA estimation technique, using mmWave FMCW radars operating in the frequency range 77–81 GHz by utilizing the mechanical rotation. Rotating the radar also increases the field of view in both azimuth and elevation. The proposed method estimates the AoA of the targets, using only a single transmitter and receiver. The measurements are carried out in a variety of practical scenarios including pedestrians, a car, and an UAV, also known as a drone. With measured data, range-angle maps are created, and morphological operators are used to estimate the AoA of the targets. We also process radar range-angle images for improved visual representation. The proposed method will be extremely beneficial for practical ground stations, traffic control and monitoring frameworks for both on-ground and airborne vehicles.

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Section: Introductionmentioning

confidence: 99%