He had reasoned that the gateway, being guarded all the time, would be free of sensor beams.

And a few feet behind the rim of the funnel the sensor beam reflected some compact matter.

He also could not detect any kind of sensor beams between their position and the target.

"But except for the sensor beams and that one subspace emission, they're ignoring us."

"After the shuttle was brought into this storage bay, we were scanned by some sort of sensor beam."

Uhura had to tell him twice that the sensor beams were working again.

Then he realized that there was someone outside his door, setting off the built-in sensor beam.

"Chief, can you give me any more resolution on my sensor beam?"

It cleared the field and the sensor beams and fell heavily into the sand outside.