Millimeter-Wave SAR-Imaging With Radar Networks Based on Radar Self-Localization

In this article, an imaging system is presented, which is solely based on distributed radar sensors mounted on a mobile platform, such as a robot or vehicle. The data of multiple distributed sensors, which perform fast chirp-sequence measurements, are processed together. This enables both a highly a...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2020-11, Vol.68 (11), p.4652-4661
Main Authors: Steiner, Maximilian, Grebner, Timo, Waldschmidt, Christian
Format: Article
Language:English
Subjects:
Chirp
Ego-motion
Global navigation satellite system
Inertial platforms
Localization
Millimeter waves
motion estimation
Motion simulation
networks
Radar imaging
Radar networks
radar systems
radar transceivers
sensor
Sensors
Spaceborne radar
Synthetic aperture radar
synthetic aperture radar (SAR)
Trajectory
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Description
Summary:In this article, an imaging system is presented, which is solely based on distributed radar sensors mounted on a mobile platform, such as a robot or vehicle. The data of multiple distributed sensors, which perform fast chirp-sequence measurements, are processed together. This enables both a highly accurate ego-motion estimation and a coherent synthetic aperture radar (SAR) imaging based on it. This system is independent of any additional sensors, such as an inertial measurement unit (IMU) for motion estimation or a global navigation satellite system (GNSS) for self-localization. Measurements using four sensors are carried out at 77 GHz to verify simulations.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2020.2995225