Abstract
This study deals with the calculation of the distribution of radiometric errors ("noise maps") in the images formed by a two-dimensional aperture synthesis radiometer, specifically the MIRAS and the HUT-2D instruments. MIRAS is a spaceborne Y-shaped interferometric radiometer that will be boarded in the European Space Agency's SMOS Earth Explorer Mission. The HUT-2D is a U-shaped airborne interferometric radiometer under development by the Helsinki University of Technology. The study focuses on the known fact that the cross-correlation of the visibility noise does depend on the shape of the sensor. We investigate this dependence for the Y and the U configurations, taking into account also the results of previous studies on redundancy and tapering.
| Original language | English |
|---|---|
| Pages (from-to) | 61-68 |
| Journal | Radio Science |
| Volume | 38 |
| Issue number | 4 |
| Publication status | Published - 2003 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- noise
- aperture synthesis