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A New Multistatic FMCW Radar Architecture by Over-the-Air Deramping

Ash, M; Ritchie, M; Chetty, K; Brennan, PV; (2015) A New Multistatic FMCW Radar Architecture by Over-the-Air Deramping. IEEE Sensors Journal , 15 (12) pp. 7045-7053. 10.1109/JSEN.2015.2466477. Green open access

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Abstract

© 2015 IEEE. Frequency modulated continuous wave (FMCW) radar is widely adopted solution for low-cost, short to medium range sensing applications. However, a multistatic FMCW architecture suitable for meeting the low-cost requirement has yet to be developed. This paper introduces a new FMCW radar architecture that implements a novel technique of synchronizing nodes in a multistatic system, known as over-the-air deramping (OTAD). The architecture uses a dual-frequency design to simultaneously broadcast an FMCW waveform on a lower frequency channel directly to a receiver as a reference synchronization signal, and a higher frequency channel to illuminate the measurement scene. The target echo is deramped in hardware with the synchronization signal. OTAD allows for low-cost multistatic systems with fine range-resolution, and low peak power and sampling rate requirements. Furthermore, the approach avoids problems with direct signal interference. OTAD is shown to be a compelling solution for low-cost multistatic radar systems through the experimental measurements using a newly developed OTAD radar system.

Type: Article
Title: A New Multistatic FMCW Radar Architecture by Over-the-Air Deramping
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JSEN.2015.2466477
Publisher version: http://dx.doi.org/10.1109/JSEN.2015.2466477
Language: English
Additional information: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: FMCW radar; bistatic radar; multistatic radar; passive radar; passive bistatic radar; micro-Doppler; distributed sensors.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Security and Crime Science
URI: https://discovery.ucl.ac.uk/id/eprint/1470394
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