The MAPSTAR imaging Doppler interferometer (IDI) radar - Description and first results

Details The MAPSTAR imaging Doppler interferometer (IDI) radar - Description and first results The MAPSTAR imaging Doppler interferometer (IDI) radar - Description and first results

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jatp...55..203b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 55, no. 3, p. 203-228.

Physics

13

Data Processing, Doppler Radar, Imaging Radar, Radio Interferometers, Remote Sensing, Algorithms, Fourier Transformation, Radar Scattering, Spectrum Analysis, Velocity Measurement

Scientific paper

The MAPSTAR IDI radar is described, and results from 34.5 h of data taken during the AIDA campaign in Puerto Rico during April 1989 are presented. The IDI method uses several independent antennas and receivers, pulsed sounding, range-gating, Doppler sorting, and spatial interferometry to determine a 3D Doppler image of the rf scatterers within the volume being illuminated. The analysis characterizes any perturbation in the index of refraction that returns rf energy in terms of 3D locations, Doppler velocities, and scattering amplitudes and phases of a number of apparent points in space (scattering points). The time-domain data, in which the E region and several distinct mesospheric regions can be seen, are shown. The IDI algorithm, which involves Fourier transforming the several independent data streams and examining the phases of 10 complex Fourier voltages, is described. Skymaps of the scattering points showing the varying spread, and sometimes asymmetry, in their distribution are provided.

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