November 2019

In the previous “How Do We Know…” post, we talked about how we used surface features, in particular sewer manholes, to validate our results.  In this post, I want to talk about how we use stuff we can’t see to validate ASTlive!’s performance. In this...

Cartacoustics sonic locating equipment can find things other techniques simply can’t at depths other methods cannot reach.  So, how do we know our equipment works? Answering that question will take a couple of posts, and for this post we will focus on things that have...