Ultra-High-Performance C- and L-Band Radiometer System for Future Spaceborne Ocean Missions
| Autor: | Steen Savstrup Kristensen, Niels Skou, Marianna Ivashina, Jakob Rosenkrantz de Lasson, Oleg Iupikov, Cecilia Cappellin, Knud Pontoppidan, Sten Schmidl Søbjærg |
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| Rok vydání: | 2019 |
| Předmět: |
Atmospheric Science
Radiometer business.industry Computer science Astrophysics::Instrumentation and Methods for Astrophysics 0211 other engineering and technologies 020206 networking & telecommunications 02 engineering and technology Converters Polarization (waves) L band radiometer Small antenna 0202 electrical engineering electronic engineering information engineering Computers in Earth Sciences Ultra high performance business Microwave Digital signal processing Computer Science::Information Theory 021101 geological & geomatics engineering Remote sensing |
| Zdroj: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 12:1670-1678 |
| ISSN: | 2151-1535 1939-1404 |
| Popis: | A next-generation real-aperture spaceborne radiometer system for high-quality ocean measurements is discussed. Instead of illuminating the antenna reflector by a classical feed array of horn antennas in a one-feed-per-beam configuration, a multi-feed-per-beam configuration is chosen. Each antenna beam is thus created by adding the outputs from many small antenna elements in the feed array, thus providing an antenna beam of unsurpassed quality. This solves the classical polarization purity and land/sea contamination issues. The concept requires many microwave receivers and fast analog-to-digital converters as well as fast digital signal processing onboard the satellite. This is discussed, and resource budgets, especially concerning power, are provided. |
| Databáze: | OpenAIRE |
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