Title
Pulse-to-Pulse Radar-Aided Positioning using Multibeam autofocus
Author
Klein, K.T.J.
Uysal, F.
Caro Cuenca, M.
Otten, M.P.G.
de Wit, J.J.M.
Publication year
2022
Abstract
Synthetic aperture radar (SAR) processing on agile radar platforms requires a very accurate estimate of position due to the unpredictable trajectory of such platforms. This is even more challenging in GPS-denied scenarios where the bias in inertial sensors cannot be compensated. In this study, we propose a 3D radar-aided positioning method based on SAR autofocusing to achieve subresolution positioning accuracy. The proposed multibeam autofocus algorithm builds on multiple SAR motion compensation techniques to generalize and provide a framework for simultaneous omnidirectional imaging and trajectory estimation and correction while taking advantage of the beamforming capabilities of the antenna array. Our initial simulations and proof of concept show that the performance of the proposed approach is adequate even in low signal-to-noise ratio cases.
Subject
SAR
Multibeam antenna
GPS-denied scenarios
To reference this document use:
http://resolver.tudelft.nl/uuid:83947659-7494-42a9-a266-3568e603d5e4
TNO identifier
973100
Publisher
IEEE
Source
Proceedings of the 18th European Radar Conference, 2022, 257-260
Document type
conference paper