What is the correct translation of "ground truth"?

Question

Robotics

In scientific articles in English, you can often find the concept of "ground truth", denoting the true position of the robot in space. What is the most appropriate term in Russian for him?

Answer 1

literal: final / earthly truth
literary: true (real, reliable)
That is, the information is ABSOLUTELY true and nothing, and under no circumstances, can be refuted ...

Answer 2

Can be translated in some cases as reference data . Those. there are noisy/distorted data, and there are those that need to be approached. For example, based on the original (undistorted) image, we build its noisy counterpart, and then evaluate the effectiveness of noise reduction with some algorithm. Those. we get the reconstructed image and compare it with the non-noisy one. Here, in this case, a non-noisy image can be called reference data.