The trick is to generate a beam that'll pierce the volcanic dust without causing a lot of false echoes.

The transit tubes have no reactors, so it wouldn't get any false echoes to interfere with the sensor's readings.

This can also reveal non-meteorological artifacts (false echoes) that will be discussed later.

Shallow water where his snorkel mast could more easily be lost in false echoes on searching radars.

Ben, I'm still getting false echoes on the close-scope.

The false echoes were everywhere, blanketing the screen.

"Some of those blips are false echoes," Jemmagar grated.

Predicting false echoes from topographical maps, modeling the blind spots mathematically!

Give them, in other words, false echoes of their own cries.

Also muddying me picture were false echoes from the rain itself-but it was an improvement.