Dr. Nikolai Kolev graduated from Bulgarian Naval Academy in 1985 and served as an Electronics Officer in the Navy. Since 1989 he was consecutively PhD student, assistant, associate professor and Head of the Department of Electronics between 2003 - 2007. Currently, he is an associate professor at the same department. He has been lecturing courses in radio waves, antennas and microwave devices, radar and sonar. His scientific interests are in the area of radar and sonar signal processing and lately in sensor networks. Dr. Kolev has more than 30 scientific publications and is an author and coauthor of three text books and 3 patents in Bulgarian. He is also active in analog and microcontroller systems embedded design and programming in C, LabView and Matlab. Dr. Kolev has been a member of the program committee of EUSAR conference since 2002 and a reviewer of IET journals. Since 2007 he has been respectively a project coordinator and leader of two NSF projects about the development of a sonar research laboratory and sensor network for underwater surveillance.