| タイトル | Spaceborne radar sensing of precipitation above an ocean surface - Polarization contrast study |
| 著者（英） | Jameson, A. R.; Kwiatkowski, John M.; Kostinski, Alexander B. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1993-10-01 |
| 言語 | eng |
| 内容記述 | The potential benefits of polarization adjustment for spaceborne radar sensing of precipitation are explored, with emphasis on the role of the wave polarization in separating or 'distinguishing' ocean surface return from the hydrometeor echoes of a 'chirped' signal. Experimental as well as computational data for the polarization scattering matrices of hydrometeors and ocean surfaces are obtained and used to calculate ocean and precipitation 'response' to the transmitted pulse for various rain rates and incidence angles. Polarization, which provides the best contrast between rain and ocean returns, is found to vary from almost circular near nadir to elliptical at large off-nadir look angles of incidence. Calculations show an order of magnitude improvement in the ratio of the returns when compared with the traditional choice of horizontal transmit and receive polarization. |
| NASA分類 | METEOROLOGY AND CLIMATOLOGY |
| レポートNO | 94A12289 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/311763 |
