A high resolution ionosonde. I - Technique and analysis methods. II - Equipment and preliminary results

Details A high resolution ionosonde. I - Technique and analysis methods. II - Equipment and preliminary results A high resolution ionosonde. I - Technique and analysis methods. II - Equipment and preliminary results

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jatp...38..935h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 38, Sept.-Oct. 1976, p. 935-943, 945-956. Research supported by the Univers

Computer Science

Sound

2

Echo Sounding, High Resolution, Ionosondes, Ionospheric Sounding, Signal Measurement, Signal Processing, Data Recording, Data Reduction, Doppler Effect, Error Signals, F Region, Frequency Stability, Instrument Errors, Signal Reception, Signal To Noise Ratios, Sporadic E Layer

Scientific paper

It is shown that by measuring the phase path of an ionospheric echo at a number of equally spaced frequencies it is possible to derive with a high degree of accuracy the group path of the echo. By using the discrete Fourier transform for analyzing the data recorded by a phase path ionosonde, the group path can be determined with an accuracy of about 250 m if a frequency range of about 300 kHz is used. A system capable of obtaining swept frequency phase path measurements is described, and some preliminary results obtained with it in studying the fine structure of the E-region, sporadic E-layers, and the F-region are examined.

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