PT Journal AU Kaak, T Abshagen, J Schmidt, G TI Real‐time capable multiple‐input–multiple‐output SONAR systems—An algorithmic approach SO IET Radar, Sonar & Navigation PY 2021 BP 985 EP 1000 VL 15 IS 9 PU IET DI 10.1049/rsn2.12091 WP https://macau.uni-kiel.de/receive/macau_mods_00002677 LA en DE MIMO Radar; Sonar; signal-to-noise ratio (SNR) SN 1751-8792 AB 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. PI Stevenage ER