학술논문

Low frequency bistatic SAR measurements
Document Type
Conference
Source
2012 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International. :315-318 Jul, 2012
Subject
Geoscience
Signal Processing and Analysis
Computing and Processing
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Synthetic aperture radar
Radar imaging
Clutter
Vehicles
Receivers
Synchronization
Bistatic SAR
synchronization
clutter suppression
VHF
UHF
Language
ISSN
2153-6996
2153-7003
Abstract
Airborne bistatic SAR data have been collected at VHF- and UHF-band to investigate clutter suppression in forested and urban areas. The synchronization between the SAR systems is accomplished using the 1-PPS signal provided by the GPS system. The same signal is also used as input to a disciplined 10 MHz master oscillator integrated in both radar systems to maintain sufficient phase stability. Images have successfully been generated using the time domain fast factorized backprojection algorithm, modified for the bistatic case. Clutter suppression has been observed when comparing the monostatic and bistatic images acquired simultaneously by the two SAR sensors. Work is in progress to quantify and compare the obtained results.