1. Multichannel Repeater for Coherent Radar Networks Enabling High-Resolution Radar Imaging
- Author
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Werbunat, David, Woischneck, Benedikt, Lerch, Julian, Schweizer, Benedikt, Michev, Rossen, Bonfert, Christina, Hasch, Jurgen, and Waldschmidt, Christian
- Abstract
Coherent radar networks allow for spanning very large apertures that include all sensors with their subapertures in the network, resulting in very good angular resolution. However, as a radar network typically has a sparse array, its performance depends on the flexibility of the antenna and network node placement. Thus, in this work, a new type of radar network is presented, allowing for a highly flexible network and array design and providing an excellent performance in direction-of-arrival (DoA) estimation. This is reached by using multichannel repeaters (MCRs) in combination with a single multiple-input multiple-output (MIMO) radar. The multichannel repeaters (MCRs) receives the radar’s signal via a line-of-sight path, and then re- transmits it via multiple transmit channels, each with a dedicated mixer used for multiplexing. To show the feasibility and the performance of this concept, a 77-
$\mathrm { \text {G} \text {Hz} }$ $4\,\, \times 4$ - Published
- 2024
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