Reconstruction of echoes reaching bats in flight from arbitrary targets by acoustic simulation.

Echolocating bats perceive their environment by emitting ultrasonic pulses and listening to echoes that are reflected back from their surroundings. Behavioral decisions of bats are mainly dependent on echo information, and acoustical analysis of echoes is useful for understanding their behavioral decisions. To date, echoes have been measured using a telemetry microphone mounted on the bat's head; however, due to technical difficulties, it was not enough to measure all the echoes reaching the bats in flight.