Towards Autonomous Localization of an Underwater Drone

<p>Autonomous vehicle navigation is a complex and challenging task. Land and aerial vehicles often use highly accurate GPS sensors to localize themselves in their environments. These sensors are ineffective in underwater environments due to signal attenuation. Autonomous underwater vehicles utilize one or more of the following approaches for successful localization and navigation: inertial/dead-reckoning, acoustic signals, and geophysical data. This thesis examines autonomous localization in a simulated environment for an OpenROV Underwater Drone using a Kalman Filter. This filter performs state estimation for a dead reckoning system exhibiting an additive error in location measurements. We evaluate the accuracy of this Kalman Filter by analyzing the effect each parameter has on accuracy, then choosing the best combination of parameter values to assess the overall accuracy of the Kalman Filter. We find that the two parameters with the greatest effects on the system are the constant acceleration and the measurement uncertainty of the system. We find the filter employing the best combination of parameters can greatly reduce measurement error and improve accuracy under typical operating conditions.</p>

Name thesis:degree_name

MS in Computer Science

Discipline thesis:degree_discipline

Computer Science

Year dc:date.available

2018

Author dc:creator

• Sfard, Nathan

Contributors dc:contributor

• Lynne Slivovsky

• Autonomous Navigation
• Autonomous Localization
• Kalman Filter
• Underwater Localization
• AUV
• Computational Engineering
• Controls and Control Theory
• Other Computer Engineering
• Robotics

Identifier

10.15368/theses.2018.97

OAI identifier oai:identifier

oai:digitalcommons.calpoly.edu:theses-3260