FAQs Archive

Q: D.15 How is the mission assigned to the underwater robot?

Before deployment, the mission is wirelessly uploaded via WiFi to the underwater robot while on deck. During operation, deviations from this initial plan can be uploaded to the robot via the acoustic link. The plan that is initially uploaded and the following deviations are provided by the master software, which is constantly developing updated operational optimization.

Q: D.12 How will multiple underwater robots coordinate to avoid overlapping or interfering with each other's missions and paths?

Each underwater robot will be provided with a mission as part of pre-launch communications. Through the ship-based USBL and seafloor dynamic LBL positioning, the robot will move to the desired target starting location. At the start and end of each path, the robot will perform a small visual survey. When arriving at the start of a run, the robot will survey the area briefly to ensure that the positional alignment of the new path is correctly positioned relative to the start or end of the robot from past paths. It will use the distinctive pattern of nodules in the survey as a fingerprint to understand any centimeter-level misalignments that the navigation system is experiencing relative to the navigation system from other robot trips to the same location.

Q: D.10 How does the underwater robot maintain its position and orientation on the ocean floor? What technologies facilitate the underwater robot's underwater navigation and mapping?

The underwater robot incorporates several standard environmental awareness sensors, such as DVL (Doppler Velocity Log), pressure sensors, USBL (ultra-short baseline), and Stereo Cameras, which are fed into the INS (inertial navigation system), where the information is fused to develop a state estimation for the AUV. As multiple AUVs begin to operate concurrently, a dynamic LBL (Long BaseLine) positioning approach will also be employed. More information about subsea positioning The state estimation accuracy for the AUV will be highest at the seafloor, where it is in proximity to other AUVs that have maintained a high accuracy, and near the surface, where it is close to the surface vessel-based USBL. When at the surface, the position will be based almost exclusively on USBL. When at the seafloor, the dynamic LBL combined with DVL and vision tracking of the seafloor will dominate. The stereo cameras on the front of the AUV map out the locations of any nodules and any macro life for the arm control algorithms to determine how to handle them.

D.12 How will multiple underwater robots coordinate to avoid overlapping or interfering with each other’s missions and paths?

Holly Nielsen2025-03-10T13:27:11-07:00December 9th, 2024|

D.10 How does the underwater robot maintain its position and orientation on the ocean floor? What technologies facilitate the underwater robot’s underwater navigation and mapping?

Holly Nielsen2025-03-10T13:22:17-07:00December 9th, 2024|

D.15 How is the mission assigned to the underwater robot?

D.16 What is the efficiency of the underwater robot’s collecting system?

D.14 What factors influence the lifespan of an underwater robot, and how can it be extended?

D.13 What is the typical operational lifespan of the underwater robot?

D.12 How will multiple underwater robots coordinate to avoid overlapping or interfering with each other’s missions and paths?

D.10 How does the underwater robot maintain its position and orientation on the ocean floor? What technologies facilitate the underwater robot’s underwater navigation and mapping?

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