Coherent measurements of a multistatic MIMO radar network with phase noise optimized non-coherent signal synthesis

peer-reviewed
Erstveröffentlichung
2022-04-02Authors
Dürr, André
Böhm, Dennis
Schwarz, Dominik
Häfner, Stephan
Thomä, Reiner
Wissenschaftlicher Artikel
Published in
IEEE Journal of Microwaves ; 2 (2022), 2. - S. 239-252. - eISSN 2692-8388
Link to original publication
https://dx.doi.org/10.1109/JMW.2022.3154886Faculties
Fakultät für Ingenieurwissenschaften, Informatik und PsychologieInstitutions
Institut für MikrowellentechnikExternal cooperations
Technische Universität IlmenauDocument version
published version (publisher's PDF)Abstract
For multistatic radar networks in the upper mm-wave range with a large spacing between its radar sensor nodes, a coherent signal distribution is very complex and thus very costly. Hence, it is desirable to generate the mm-wave signals individually for each radar sensor node, i.e., non-coherently. However, multistatic radar networks using a non-coherent signal distribution for its radar sensor nodes are affected by systematic errors and uncorrelated phase noise, which reduces the resolution and the detection performance of these systems. In this article, a novel non-coherent signal synthesis concept based on the direct digital synthesis (DDS) principle is presented for multistatic radar networks. Compared to a signal synthesis using a phase-locked loop (PLL), it is shown that the different phase noise behavior of the DDS is beneficial for bistatic signal paths between the radar sensor nodes. The presented hardware concept is considered and analyzed for three different types of coherency regarding the signal distribution: coherent, quasi-coherent, and incoherent. Measurements with a multiple-input multiple-output (MIMO) radar at 150GHz prove that despite a non-coherent signal distribution, it is possible to achieve the same detection and imaging performance as with a fully coherent radar by using a DDS.
DFG Project THU
binoMIMO / Hochauflösende binokulare MIMO-Millimeterwellen-Radare (binoMIMO) / DFG / 317632307
Publication funding
Open-Access-Förderung durch die Universität Ulm
Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 491116205
Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 491116205
Subject headings
[GND]: Bistatisches Radar | FMCW-Radar | MIMO | Multistatisches Radar | Phasenregelkreis[LCSH]: Bistatic radar | Imaging systems
[Free subject headings]: Chirp sequence modulation | DDS | Direction-of-arrival (DoA) estimation | Frequency modulated continuous wave (FMCW) | Imaging radar | Millimeter-wave radar | MIMO radar | Multistatic radar | Phase noise correlation | PLL | Radar networks
[DDC subject group]: DDC 620 / Engineering & allied operations
Metadata
Show full item recordDOI & citation
Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-42991
Dürr, André et al. (2022): Coherent measurements of a multistatic MIMO radar network with phase noise optimized non-coherent signal synthesis. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. http://dx.doi.org/10.18725/OPARU-42991
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