First, the greater working range of the call allows bats to detect targets present at great distances - a common situation in open environments.

Some could detect targets at distances up to 12 kilometers.

The radar has a range of between 250-300 km and is able to detect slow, low flying targets with relative ease.

This could detect targets at up to 120-miles (196-km) range.

Differences in temperatures between objects and their surroundings made it possible to detect targets on the ground.

It is designed primarily to detect targets at ranges of up to 16 km.

Several laws describe a human's ability to visually detect targets on a uniform background.

The radar can detect targets up to 300 km away and is now part of Iran's air defense system.

At 9:00 PM, just as they began doing this, they detected targets to the west.

He has highly sensitive sensor systems, being able to detect targets approaching from miles away and even accurately telling who exactly the target is.