There have been some questions about what the expected accuracy of TRIUMPH-LS should be and how occupation time affects accuracy. I am posting the results of some precision test conducted by John Evers in this thread. These test were conducted with a TRIUMPH-2 base station and TRIUMPH-LS rover in an open sky environment.
The settings used were:
Verify without V6 Reset
Consistency Level: 0
Accept Fixed Only, RMS: All, DOP: All
Accept Number of Fixed RTK Engines: At least 2
Confidence Guard: 0.164 ft (5 cm)
Auto Accept and Auto Re-Start were used to automatically collect many points at the same physical point on the ground. The number of epochs to stop after was varied for each data set. These spreadsheets show the frequency distributions of the points' horizontal and vertical distances from the average position for each data set:
2 EPOCH
5 EPOCH
10 EPOCH
300 EPOCH
600 EPOCH
As you can see precision increases with number of epochs collected for the point. These results were very good, in the last set 600 epochs were collected for each point (a 10 minute occupation time) and a total of 62 points were collected. Of those points, 83.9% of them fell within 0.01' horizontally of the average position and all fell within 0.02'.
The settings used were:
Verify without V6 Reset
Consistency Level: 0
Accept Fixed Only, RMS: All, DOP: All
Accept Number of Fixed RTK Engines: At least 2
Confidence Guard: 0.164 ft (5 cm)
Auto Accept and Auto Re-Start were used to automatically collect many points at the same physical point on the ground. The number of epochs to stop after was varied for each data set. These spreadsheets show the frequency distributions of the points' horizontal and vertical distances from the average position for each data set:
2 EPOCH
5 EPOCH
10 EPOCH
300 EPOCH
600 EPOCH
As you can see precision increases with number of epochs collected for the point. These results were very good, in the last set 600 epochs were collected for each point (a 10 minute occupation time) and a total of 62 points were collected. Of those points, 83.9% of them fell within 0.01' horizontally of the average position and all fell within 0.02'.
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