Triton BathyPro - Manual (Page 95)

or position. Accurate values are critical in order to process multibeam data
correctly.
To confirm alignment of the IMU sensor with the sonar transducer and to verify
delay times applied to the time-tagged sensor data, a patch test needs to be
conducted. The patch test consists of a series of lines run in a specific pattern
which are used in pairs to analyze roll, pitch and heading alignment bias angles
as well as latency in the time-tagging of the sensor data
You do not have to run the patch test in order to fully use
BathyPro; the patch test functionality is merely included to help
identify system-related offsets in the data.
Adopting a Test Approach
Before you run the patch test function in BathyPro, take a moment to analyze
your approach to the task. A patch test is like running a small data survey over a
known area. Knowing the “lay of the land” (sea floor), you then test for roll,
latency, pitch, and yaw offsets of the multibeam sensor. If your sonar has
sidescan transducers, you can use the Latency with Side Scan Imagery Data
option in the BathyPro software to more accurately determine latency.
June 2004 BathyPro User’s Manual 95