Range Determination by Measuring Time Delays in Echolocating Bats

Like the technical systems of radar and sonar, the echolocation systems of bats consist of a transmitter which produces and radiates a particular type of signal and a receiver which evaluates the returning echoes. Using echolocation, bats are able to localize a target by measuring its distance and angular position. Additionally they can get information on radial velocity and on target properties like size, shape and surface texture. The localization and the characterization of the target is hampered by noise, clutter, signals from other bats and signal changes due to atmospheric influences.

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