TY - JOUR
T1 - Traffic monitoring with spaceborne SAR-Theory, simulations, and experiments
AU - Hinz, Stefan
AU - Meyer, Franz
AU - Eineder, Michael
AU - Bamler, Richard
N1 - Funding Information:
This work has been partly founded by the DLR project “TerraSAR-X Traffic Products”. The support of our project team, especially Hartmut Runge, Steffen Suchandt, Andreas Laika and Diana Weihing is gratefully acknowledged.
PY - 2007/5
Y1 - 2007/5
N2 - This paper reviews the theoretical background for upcoming dual-channel radar satellite missions to monitor traffic from space and exemplifies the potentials and limitations by real data. In general, objects that move during the illumination time of the radar will be imaged differently than stationary objects. If the assumptions incorporated in the focusing process of the synthetic aperture radar (SAR) principle are not met, a moving object will appear both displaced and blurred. To study the impact of these (and related) distortions in focused SAR images, the analytic relations between an arbitrarily moving point scatterer and its conjugate in the SAR image have been reviewed and adapted to dual-channel satellite specifications. Furthermore, a specific detection scheme is proposed that integrates complementary detection and velocity estimation algorithms with knowledge derived from external sources as, e.g., road databases. Results using real SAR data are presented to validate the theory.
AB - This paper reviews the theoretical background for upcoming dual-channel radar satellite missions to monitor traffic from space and exemplifies the potentials and limitations by real data. In general, objects that move during the illumination time of the radar will be imaged differently than stationary objects. If the assumptions incorporated in the focusing process of the synthetic aperture radar (SAR) principle are not met, a moving object will appear both displaced and blurred. To study the impact of these (and related) distortions in focused SAR images, the analytic relations between an arbitrarily moving point scatterer and its conjugate in the SAR image have been reviewed and adapted to dual-channel satellite specifications. Furthermore, a specific detection scheme is proposed that integrates complementary detection and velocity estimation algorithms with knowledge derived from external sources as, e.g., road databases. Results using real SAR data are presented to validate the theory.
KW - Along-track radar interferometry
KW - Spaceborne synthetic aperture radar
KW - Vehicle detection
KW - Velocity estimation
UR - http://www.scopus.com/inward/record.url?scp=34247569869&partnerID=8YFLogxK
U2 - 10.1016/j.cviu.2006.09.008
DO - 10.1016/j.cviu.2006.09.008
M3 - Article
AN - SCOPUS:34247569869
SN - 1077-3142
VL - 106
SP - 231
EP - 244
JO - Computer Vision and Image Understanding
JF - Computer Vision and Image Understanding
IS - 2-3
ER -