UAVSAR: New NASA Airborne SAR System for Research
| Autor: | Ronald J. Muellerschoen, Cathleen E. Jones, K. Wheeler, Howard A. Zebker, T. Miller, S. Hensley, Paul A. Rosen, Soren N. Madsen, G. Sadowy, S. Shaffer |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Synthetic aperture radar
Engineering business.industry Polarimetry Flight management system Aerospace Engineering ComputerApplications_COMPUTERSINOTHERSYSTEMS Wind direction Remotely operated underwater vehicle law.invention Space and Planetary Science law Monopulse radar Global Positioning System Electrical and Electronic Engineering Radar Aerospace engineering business Remote sensing |
| Zdroj: | IEEE Aerospace and Electronic Systems Magazine. 22:21-28 |
| ISSN: | 0885-8985 |
| DOI: | 10.1109/maes.2007.4408523 |
| Popis: | NASA's Jet Propulsion Laboratory is currently building a reconfigurable, polarimetric L-band synthetic aperture radar (SAR), specifically designed to acquire airborne repeat track SAR data for differential interferometric measurements. Differential interferometry can provide key deformation measurements, important for studies of earthquakes, volcanoes, and other dynamically changing phenomena. Using precision real-time GPS and a sensor controlled flight management system, the system will be able to fly pre-defined paths with great precision. The expected performance of the flight control system will constrain the flight path to be within a 10 m diameter tube about the desired flight track. The radar will be designed to be operable on a Unpiloted Arial Vehicle (UAV) but will initially be demonstrated on a NASA Gulfstream III. The radar will be fully polarimetric, with a range bandwidth of 80 MHz (2 m range resolution), and will support a 16 km range swath. The antenna will be electronically steered along track to assure that the antenna beam can be directed independently, regardless of the wind direction and speed. Other features supported by the antenna include elevation monopulse and pulse-to-pulse re-steering capabilities that will enable some novel modes of operation. The system will nominally operate at 45,000 feet (13,800 m). The program began as an Instrument Incubator Project (IIP) funded by NASA Earth Science and Technology Office (ESTO). |
| Databáze: | OpenAIRE |
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