Thanks for the replies, clearly some of the required sensors for full autonomy are way out of reach for many, a DVL comes in at around £40k (GBP) and further integration can be eye-watering dependant upon functionality, depth ratings etc.
I’m interested in some of the BR products as a possible system for near-shore/in-shore inspections/susrveys, fitted with a side scan system.
A ‘dead reckoning’ navigation option, i.e. the vehicle takes it’s fix and bearing on the surface then commences to depth to survey, would be a possibility, although obviously there will be drift/current issues as the vehicle continues to hold it’s heading but not compensate for the current/drift. Re-surfacing once a ‘leg’ is finished and regaining it’s position and next bearing.
It is certainly very interesting to know that the capabilities can be adapted to run with a USBL system, this would certainly assist with maintaining a set route, i.e. a pipeline survey, etc.
I’ll certainly create a build log as this project continues, I hope to begin building shortly and the communities input is always valued.