  In the recent decade, electronic technology gets advanced day by day the
methodologies too should update. For the purpose of ranging various methods
such Radio Detection and Ranging (RADAR), Light Detection and Ranging (LIDAR)
and Sonic Navigation and Ranging (SONAR) etc. are used. Later, by adapting the
earlier technologies and further modifying the purposes of detection and
ranging in navigation, the technology of Sonic Detection and Ranging (SODAR) is
used in modern robotics. The SODAR can be defined as a child of SONAR and also
a twin of Echo sounder. The echo-sounder is used only for ranging. But the
SODAR use the low-frequency wave of 33 kHz to measure the underwater depth and
also to detect the objects below the water medium. So, this work comprises the
designing of a system to evaluate the Object Detection and Ranging for
Autonomous Navigation of Mobile Robots.
