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Mesospheric measurements of irregularity patches using a 3-antenna interferometer, part 3.6b
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ierkic, H. M. Rottger, J. |
| Copyright Year | 1984 |
| Description | Three events of mesospheric radar returns have been isolated to illustrate the potential of a three-antenna interferometer in the study of the neutral atmosphere. Contour plots of echo intensity and the presence of irregularities in isolated and well-defined regions are shown. These measurements were carried out using the SOUSY radar in the Harz mountains in Germany, on September 9, 1980. The system frequency is 53.5 MHz. Local time is 2 hours in advance of Universal time. The irregularities wavelength is 2.81 m and the three arms of the interferometer were sampled with 167 ms of time difference. To provide precise estimates of vertical velocities, the measured (radial) Doppler shift has to be corrected to subtract the contribution due to the horizontal motions. For near-vertical observations (zenith angle less than about 10 deg) it is readily shown that the rate of change of the measured phases are related to the velocities V sub eq, V sub ns (in the East-West and North-South directions). |
| File Size | 235111 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850024185 |
| Archival Resource Key | ark:/13960/t58d4rd0s |
| Language | English |
| Publisher Date | 1984-12-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Frequency Shift Turbulence Spectrum Analysis Radar Scattering Radar Antennas Mesosphere Irregularities Velocity Measurement Interferometers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
