The reporter doesn't -- the article goes on to talk about Fourier transforms, and how they'd been used in previous attempts. The sophistication alluded to in t

The reporter doesn't -- the article goes on to talk about Fourier transforms, and how they'd been used in previous attempts. The sophistication alluded to in the article is in the visualisation of the results: the reason previous attempts had got it wrong was because looking at the flat numbers returned had misled them.