The values entered here will be used in the calculation of total propagated uncertainty (TPU). TPU is derived from a combination of estimates of the accuracy of each individual sensor, estimates such as:
• Nav/gyro/heave/pitch/roll/tide errors
• Latency error estimate
• Sensor offset error estimates.
These uncertainty estimates are combined with individual sonar model characteristics in DeviceModels.xml to calculate horizontal and vertical uncertainty values for every sounding along a track line when TPU is applied
Sensor accuracy values for various sonar types can be viewed on the Total Propagated Uncertainty page of the Teledyne CARIS web site https://www.teledynecaris.com/en/products/total-propagated-uncertainty/.
The TPU Values component has the following attributes in the Attributes window:
• Date: The year and Julian day of the time stamp for the Sensor Offsets, Sensor Standard Deviations, and Other Standard Deviations components (see Component Time Stamps).
• Time: The hour and minute of the time stamp for the Sensor Offsets, Sensor Standard Deviations, and Other Standard Deviations components (see Component Time Stamps).
• Comments: A text field for your use.