Patent ID: 11927681
Assignee: HYDROMAPPER GMBH
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 1:
2. A system for measuring a water-filled structure, the system comprising:
a measurement device comprising,
a sensor carrier with a first end arranged below a surface of water when the measurement device is in a state of use, and
a second end arranged above the surface of the water when the measurement device is in the state of use,
at least one measurement sensor positioned on the first end of the sensor carrier and configured to measure the water-filled structure by capturing measurement data, and
an acceleration sensor and a prism unit;

a tachymeter positioned outside of the water-filled structure and configured to be aimed at the measuring device, wherein a position of the tachymeter is determined using GNSS measuring points configured to receive GNSS signals from satellites in a global navigation system; and
a control unit configured to determine at least one of (1) a current position of the measurement device and (2) an orientation of the measurement device, based on: (1) measuring data from the acceleration sensor; (2) the GNSS signals received by the GNSS measuring points; and (3) measuring data captured by the tachymeter, and further configured to match the at least one of the current position and orientation to the measurement data.