Accession Number : ADD000774
Title : High Resolution, Very Short Pulse, Inosounder.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Lewis,Edward A ; Rasmussen,John E ; Heckscher,John L ; Kossey,Paul A ; Whidden,Roger W
Report Date : 29 Apr 1975
Pagination or Media Count : 11
Abstract : The patent describes a high resolution, super short pulse, VLF/LF ionosounder which transmits signals that arrive at a distant receiver both by traveling over the earth's surface and by reflection from the ionosphere. There is radiated such short pulses that the groundwave, which arrives at the receiver first, has past before the arrival of the skywave signal, giving a clean separation between the ground and skywave signals thus making it possible to study uncontaminated individual skywave reflections and also making possible very high resolution. Amplitude and phase information may be recovered by frequency or time domain processing.
Descriptors : *Ionosondes, *Patents, Very low frequency, Low frequency, Signal processing, Time domain, Frequency, High resolution
Subject Categories : Atmospheric Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE