NDLI: UAVSAR: New NASA Airborne SAR System for Research

Content Provider	IEEE Xplore Digital Library
Author	Rosen, P.A. Hensley, S. Wheeler, K. Sadowy, G. Miller, T. Shaffer, S. Muellerschoen, R. Jones, C. Madsen, S. Zebker, H.
Copyright Year	1986
Abstract	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).
Starting Page	21
Ending Page	28
Page Count	8
File Size	5118614
File Format	PDF
ISSN	08858985
Volume Number	22
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	NASA Radar tracking Synthetic aperture radar Seismic measurements Radar antennas Radar polarimetry Unmanned aerial vehicles Directive antennas Propulsion Laboratories
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Electrical and Electronic Engineering Space and Planetary Science

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UAVSAR: a new NASA airborne SAR system for science and technology research

Status of a UAVSAR designed for repeat pass interferometry for deformation measurements

ONERA SAR facilities

The NASA/JPL Multifrequency, Multipolarisation Airborne SAR System

UAVSAR Polarimetric Calibration

Airborne array aperture UWB UHF radar-motivation and system considerations

Integrated design of synthetic aperture radars for unmanned aircraft

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Alternatives to Target Entropy and Alpha Angle in SAR Polarimetry

UAVSAR: New NASA Airborne SAR System for Research

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