TY - JOUR
T1 - SABRINA
T2 - A SAR bistatic receiver for interferometric applications
AU - Sanz-Marcos, Jesus
AU - Lopez-Dekker, Paco
AU - Mallorqui, Jordi J.
AU - Aguasca, Albert
AU - Prats, Pau
PY - 2007/4
Y1 - 2007/4
N2 - This letter discusses the implementation of SABRINA, Synthetic Aperture radar Bistatic Receiver for Interferometric Applications. The ground resolution of a fixed-receiver bistatic system is studied, showing that it is comparable to that of a monostatic system. Due to the short distance from target to receiver, large sensitivity is obtained. The noncooperative nature of the bistatic system forces a conservative data-acquisition strategy based on continuously sampling the scattered signal during a temporal window around the predicted satellite overpass time. Also, to be able to synchronize the system in time and in frequency, sampling of a direct signal obtained through an antenna pointed at the satellite is required. Besides the signal processing required to phase-lock the received signal, the bistatic synthetic aperture radar processing needs to take into account the azimuth-dependent phase history. First focused images obtained with the SABRINA-ENVISAT combination are discussed.
AB - This letter discusses the implementation of SABRINA, Synthetic Aperture radar Bistatic Receiver for Interferometric Applications. The ground resolution of a fixed-receiver bistatic system is studied, showing that it is comparable to that of a monostatic system. Due to the short distance from target to receiver, large sensitivity is obtained. The noncooperative nature of the bistatic system forces a conservative data-acquisition strategy based on continuously sampling the scattered signal during a temporal window around the predicted satellite overpass time. Also, to be able to synchronize the system in time and in frequency, sampling of a direct signal obtained through an antenna pointed at the satellite is required. Besides the signal processing required to phase-lock the received signal, the bistatic synthetic aperture radar processing needs to take into account the azimuth-dependent phase history. First focused images obtained with the SABRINA-ENVISAT combination are discussed.
KW - Bistatic synthetic aperture radar
KW - Interferometry
KW - Sensor of opportunity
KW - Synthetic aperture radar (SAR)
UR - http://www.scopus.com/inward/record.url?scp=34247326605&partnerID=8YFLogxK
U2 - 10.1109/LGRS.2007.894144
DO - 10.1109/LGRS.2007.894144
M3 - Article
AN - SCOPUS:34247326605
SN - 1545-598X
VL - 4
SP - 307
EP - 311
JO - IEEE Geoscience and Remote Sensing Letters
JF - IEEE Geoscience and Remote Sensing Letters
IS - 2
ER -