We offer a monitoring and underwater positioning system - SPP1. We are a producer of this system. The system allows you to monitor and position the ROV vehicle and diver. The geographical position can be sent to external programs such as MS1000 or QINSy software. Thanks to a combination of ROV, scanning sonar and positioning system, we are able to locate underwater objects and to determine their geographical position. The accuracy of determining of the position of our system is about 1.5m at a range up to 1 km (between measurement buoys).
In addition to the geographical position, the system allows you to record the current depth. The following image shows the depth record during the diver's work from the moment of descent to the moment of ascent. The SPP-1 transmitter was attached to the diver's suit.
The accuracy of the position measurement depends on the conditions prevailing in the water, especially the water temperature gradient.
An exemplary dispersion of the transmitter position measured within 10 minutes during the tests is shown in the figure below: