000K utf8 1100 $c2021 1500 eng 2050 urn:nbn:de:gbv:8:3-2022-00277-5 2051 10.1049/rsn2.12091 3000 Kaak, Thorben 3010 Abshagen, Jan 3010 Schmidt, Gerhard 4000 Real‐time capable multiple‐input–multiple‐output SONAR systems—An algorithmic approach [Kaak, Thorben] 4209 In recent years, significant effort has been allocated to research on multiple‐input–multiple‐ output (MIMO) sound navigation and ranging (SONAR) and RADAR systems. Most work has been conducted on the general theoretical functionality of such systems. Less effort has been applied to considerations of the real‐time MIMO capability, although this is an important factor for the application of these new algorithms in real SONAR systems. To account for this, the following work focusses, after introducing the used methodology and revisiting the general MIMO idea and considered system, on more effective permutations of the involved algorithms in the reduction of floating ‐point operations. In this context, the general necessity of the algorithms utilized is shown. Furthermore, it is proven that the reduction in computational load does not affect the performance of the system. In addition, the main algorithmic parts of MIMO systems can be exchanged almost arbitrarily under given restrictions without changing the result. Therefore, the performance differences in floating ‐point operations are depicted to give an estimate of the achievable degree of complexity reduction. The results for the investigated systems and algorithms are obtained by applying a system simulation of a simple underwater channel. The obtained results were also verified using a real MIMO SONAR system operating in real time. 4950 https://doi.org/10.1049/rsn2.12091$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00277-5$xR$3Volltext$534 4961 https://macau.uni-kiel.de/receive/macau_mods_00002677 5051 600 5051 621.3 5550 MIMO Radar 5550 signal-to-noise ratio (SNR) 5550 Sonar