Automatic calculation of electron density profiles from digital ionograms. III. Processing of bottomside ionograms

Journal Article · Sun May 01 04:00:00 EDT 1983 · Radio Sci.; (United States)

DOI:https://doi.org/10.1029/RS018i003p00477· OSTI ID:6542478

Reinisch, B W; Huang, X

It is noted that automatic scaling of bottomside Digisonde ionograms gives the E and F region echo traces with high accuracy. Polarization and incidence angle information in the ionogram makes it possible to extract the vertical ordinary polarization echo trace from quiet as well as disturbed ionograms. The scaling algorithm is tested with Digisonde ionograms from Goose Bay, Labrador, which reveal spread F about 50 percent of the time. In spite of these disturbed conditions, f0F2 is determined within 1/2 MHz for 475 ionograms out of 577 during January 1980. A profile inversion algorithm gives a calculation of the electron density profile from the autoscale h-prime(f) points. Parabolic profile shapes are assumed for the E region and for the valley between the E and the F layer. The F layer is approximated through a single sum of Chebyshev polynomials, and the entire profile is described by means of a set of 16 numerical values.

• Research Organization: Lowell Univ., MA
• OSTI ID: 6542478
• Journal Information: Radio Sci.; (United States), Journal Name: Radio Sci.; (United States) Vol. 18; ISSN RASCA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
DOPPLER EFFECT
E REGION
EARTH ATMOSPHERE
ELECTRON DENSITY
ELECTRONIC EQUIPMENT
EQUIPMENT
F REGION
FUNCTIONS
IONOSONDES
IONOSPHERE
MATHEMATICAL LOGIC
PLANETARY IONOSPHERES
POLYNOMIALS
RADIO EQUIPMENT