Loading...
Please wait, while we are loading the content...
Similar Documents
Mars: seasonally variable radar reflectivity
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Thompson, T. W. Roth, L. E. Saunders, R. S. |
| Copyright Year | 1987 |
| Description | Since reflectivity is a quantity characteristic of a given target at a particular geometry, the same (temporally unchanging) target examined by radar on different occasions should have the same reflectivity. Zisk and Mouginis-Mark noted that the average reflectivities in the Goldstone Mars data increased as the planet's S hemisphere passed from the late spring into early summer. The same data set was re-examined and the presence of the phenomenon of the apparent seasonal variability of radar reflectivity was confirmed. Two objections to these findings are addressed: (1) reflectivity variations may be present in the Goldstone Mars data as a result of an instrument/calibration error; and (2) the variations were introduced into the analysis through comparing reflectivities from two incompatible subsets of the data. |
| File Size | 176293 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870014013 |
| Archival Resource Key | ark:/13960/t7xm36j7g |
| Language | English |
| Publisher Date | 1987-05-01 |
| Access Restriction | Open |
| Subject Keyword | Communications And Radar Calibrating Annual Variations Radio Telescopes Radar Astronomy Radar Scattering Mars Surface Radar Echoes Seasons Reflectance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
