For imaging radar, higher angular resolution is essential, yet it requires a larger number of antenna elements in enlarged regular arrays. By using antenna-array sparsity, improved imaging performance can be achieved without the increase of antenna elements and the corresponding cost. A two-step synthesis procedure is developed and validated with a model of a 3D MIMO mm-wave imaging radar. Through simulations, it is shown that with a sparse transmit and receive array, an improvement in beam-width and side-lobe levels in the virtual array patterns for MIMO radars can be achieved. The model is confirmed by an experiment using the Walabot-60GHz radar from Vayyar.
|Title of host publication||EuRAD 2020 - 2020 17th European Radar Conference|
|Publisher||Institute of Electrical and Electronics Engineers|
|Number of pages||4|
|Publication status||Published - 3 Feb 2021|
|Event||17th European Radar Conference, EuRAD 2020 - Utrecht, Netherlands|
Duration: 10 Jan 2021 → 15 Jan 2021
|Conference||17th European Radar Conference, EuRAD 2020|
|Period||10/01/21 → 15/01/21|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT This work is part of the HTSM research program under project number 13922, funded by NWO-TTW (Netherlands Organization for Scientific Research). The authors would like to thank Radarxense B.V. and Vayyar Imaging Ltd for supporting this research.
Copyright 2021 Elsevier B.V., All rights reserved.
- antenna arrays
- millimeter wave radar
- MIMO radar
- radar antennas
- radar imaging
- sparse arrays