An Innovative Link-Free Permanent-C (LFPC) Phase Synchronization Scheme for Distributed SAR
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Date
2023Type
- Journal Article
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Abstract
The distributed multiple-input-multiple-output synthetic aperture radar (MIMO-SAR) system composed of numerous separated transmitters and receivers can realize multiangle imaging, cross-and along-track interferometry through their high-precision cooperation. However, phase synchronization is a major factor affecting the cooperation of distributed MIMOSAR. As such, this letter proposes a Link-Free Permanent-C (LFPC) phase synchronization scheme for the first time. The designed system framework, basic principle, and error model of the scheme are described, and some simulations are performed to evaluate the synchronization accuracy of the LFPC scheme. The results demonstrate that the LFPC scheme has a frequency stability of 10(-15) when SNR >= 50 dB, and it is a candidate for the future distributed SAR mission. Show more
Publication status
publishedExternal links
Journal / series
IEEE Geoscience and Remote Sensing LettersVolume
Publisher
IEEESubject
Distributed SAR; phase synchronization schemeMore
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ETH Bibliography
yes
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