TY JOUR TI Systems analysis of feature extraction and matching methods in opt acoustic data for navigation and mapping tasks KW data fusion KW deep self-learning KW feature matching KW multipath echo sounder KW inertial navigation information KW digital twin KW computer vision methods JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Svischev, N.. AU Azhmukhamedov, I.. AU Popov, G.. PY 2025 IS 2025 PB Astrakhan State Technical University