This technical communiqu\'e aims at correcting an erroneous statement (Lemma 2.4) in an earlier paper by the same authors concerning a sufficient condition of uniform observability for a Linear Time-Varying (LTV) system. In this earlier paper, the proofs of two other lemmas, about body-pose estimation from range measurements, relied on this erroneous statement. For the sake of conciseness, only a new proof of one of these lemmas is presented, the proof of the second lemma being a simpler version of it.
Cite
@article{arxiv.2009.06278,
title = {Correction to:"Position estimation from direction or range measurements"},
author = {Tarek Hamel and Minh-Duc Hua and Claude Samson},
journal= {arXiv preprint arXiv:2009.06278},
year = {2020}
}