We are trying to develop a small enough acoustic sensor to track them."

Acoustic sensors can be used to monitor the sound made by wind and precipitation.

Some systems use an acoustic sensor linked to the preemption system.

Passive acoustic sensors can detect aircraft flying low over the sea.

The changes included streamlining to make them quieter and improved acoustic sensors.

By now the water around it was virtually peppered with the small acoustic sensors and transmitters.

Coupled with acoustic sensors that recognize the sound signature of a tank, it could offer high accuracy.

Quath labored forward under her load of acoustic sensors.

Acoustic Sensor Operators begin their career in the fleet after attending specialized training.

Microphone - an acoustic sensor that provides input by converting sound into electrical signals.

And with systems that use magnetic and acoustic sensors, the human subject is often tethered to wires.

The thunder was too loud to be heard; the gleisner's acoustic sensors shut down in self-defense.

Ultrasonic gas detectors use acoustic sensors to detect changes in the background noise of its environment.

Once the mine is armed and ready to engage, the acoustic sensor listens for a valid noise input.

Both Optical and acoustic sensors have been used from vehicles while on the move in urban and rural environments.

And the acoustic sensors were thousands of tiny fiber-optic coils in line, each with its own built-in laser.

The M93 uses both seismic and acoustic sensors to track and identify potential targets near the mine.

If a particle strikes the station hard enough to possibly cause a hole, a noise detectable by acoustic sensors will be produced.

These countermeasures use a variety of approaches including lasers, acoustic sensors and electromagnetic technologies, he said.

He doesn't appear to have suffered a fatal engineering casualty, at least according to the acoustic sensors we have in the area.

An ultrasonic flow meter measures the velocity of a liquid or gas through a pipe using acoustic sensors.

To hunt a submarine, which is aware of water temperature, the hunter must drop acoustic sensors below the thermocline.

In Redwood City, the acoustic sensors are welcomed in the neighborhood where they have been installed.

Acoustic sensors - microphones with coverage narrow enough to "hear" the passage of individual tires - can also be used for traffic counting.

Passive acoustic sensors provide additional measurements that can be compared with signatures, and used to complement other sensors.