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Observation of Traveling Ionospheric Disturbances by the Doppler Technique with Spaced Transmitters

John Emory Jones

出版	U.S. Department of Commerce, Environmental Science Services Administration, Research Laboratories, Space Disturbances Laboratory, 1969
URL	http://books.google.com.hk/books?id=kVIbAQAAIAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

This report describes a radio investigation of traveling ionospheric disturbances carried out near Boulder, Colorado, over a 1-year period from June 1967 to June 1968. The three-dimensional motions of F2 layer disturbances were measured by the high frequency Doppler technique with spaced transmitters and at several probing frequencies. Horizontal motions were determined by cross-correlating three signals on frequencies near 5 MHz, whose reflection points were approximately at the corners of a horizontal equilateral triangle with 40-km sides. Vertical motions were determined from cross-correlation of signals on frequencies of 3.3, 4.0, and 5.1 MHz, whose reflection points were aligned vertically.