The Theory of the Radio Detection of Meteors

The methods of observation are described both for ``bursts'' of signal strength and ``whistles'' caused by reflection of radio waves from meteoric ionization. Consideration is given to the geometry of reflection, and it is shown that meteoric velocity and range can be accurately determined by combined pulse and whistle observations. The possibility of determining the direction and position of a meteor path by observations at three receiving locations is examined, and a method for interpreting such data is developed. An investigation is made of the fraction of meteors capable of producing bursts, and the important effect of the meteoric radiant is emphasized.