It is a tiny C# app, which is able to read SL3 sonar log files made by Lowrance & Simard devices and export the frame headers into a CSV text file. For details see & cite the following publication: Halmai, Ákos; Gradwohl–Valkay, Alexandra; Czigány, Szabolcs; Ficsor, Johanna; Liptay, Zoltán Árpád; Kiss, Kinga; Lóczy, Dénes and Pirkhoffer, Ervin. 2020. "Applicability of a Recreational-Grade Interferometric Sonar for the Bathymetric Survey and Monitoring of the Drava River" ISPRS International Journal of Geo-Information 9, no. 3: 149. https://doi.org/10.3390/ijgi9030149 https://www.mdpi.com/2220-9964/9/3/149
For Hungarian readers: Halmai Ákos, Balatonyi László, Valkay Alexandra Ilona, Czigány Szabolcs, Liptay Zoltán Árpád, Pirkhoffer Ervin. 2018. Új megközelítésű mederfelmérési technikák alkalmazása kisvízfolyásokon. Védelem Tudomány – III. évfolyam 4. szám, 2018. 12. hó. http://www.vedelemtudomany.hu/articles/III/4/09-halmai-etal.pdf
Dissertation in Hungarian: https://pea.lib.pte.hu/handle/pea/24594