Partially coherent radar unties range resolution from bandwidth limitations

Rony Komissarov, Vitali Kozlov, Dmitry Filonov, Pavel Ginzburg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

It is widely believed that range resolution, the ability to distinguish between two closely situated targets, depends inversely on the bandwidth of the transmitted radar signal. Here we demonstrate a different type of ranging system, which possesses superior range resolution that is almost completely free of bandwidth limitations. By sweeping over the coherence length of the transmitted signal, the partially coherent radar experimentally demonstrates an improvement of over an order of magnitude in resolving targets, compared to standard coherent radars with the same bandwidth. A theoretical framework is developed to show that the resolution could be further improved without a bound, revealing a tradeoff between bandwidth and sweep time. This concept offers solutions to problems which require high range resolution and accuracy but available bandwidth is limited, as is the case for the autonomous car industry, optical imaging, and astronomy to name just few.

Original languageEnglish
Article number1423
JournalNature Communications
Volume10
Issue number1
DOIs
StatePublished - 1 Dec 2019

Funding

FundersFunder number
Horizon 2020 Framework Programme802279
European Research Council
PAZY Foundation01021248

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