TY - GEN
T1 - GEO SAR interferometry
T2 - IET International Radar Conference 2013
AU - Hu, Cheng
AU - Li, Xiaorui
AU - Long, Teng
AU - Gao, Yangte
PY - 2013
Y1 - 2013
N2 - Geosynchronous Synthetic Aperture Radar (GEO SAR) is the satellite running on the 36,500-Km altitude orbit, and its period is almost 1-day. As we all know, if there is no effect of perturbation force, the orbit of the GEO SAR will coincident exactly per period, and there will be no baseline to achieve interferometry. However in practice, there are varieties of perturbation force in the space, so the orbit in different periods is no longer coincident, which makes it possible to achieve interferometry. In this paper, we study two typical GEO SAR orbits, and analyze the nadir-point trajectory excursion due to orbital perturbation using the software STK (Satellite Tool Kits, AGI). Based on the interferometry theory, we define the repeat-pass baseline of the GEO SAR, and obtain the height measurement accuracy of different kinds of orbits. At last, we verify the feasibility of GEO SAR interferometry by simulation.
AB - Geosynchronous Synthetic Aperture Radar (GEO SAR) is the satellite running on the 36,500-Km altitude orbit, and its period is almost 1-day. As we all know, if there is no effect of perturbation force, the orbit of the GEO SAR will coincident exactly per period, and there will be no baseline to achieve interferometry. However in practice, there are varieties of perturbation force in the space, so the orbit in different periods is no longer coincident, which makes it possible to achieve interferometry. In this paper, we study two typical GEO SAR orbits, and analyze the nadir-point trajectory excursion due to orbital perturbation using the software STK (Satellite Tool Kits, AGI). Based on the interferometry theory, we define the repeat-pass baseline of the GEO SAR, and obtain the height measurement accuracy of different kinds of orbits. At last, we verify the feasibility of GEO SAR interferometry by simulation.
KW - GEO SAR
KW - Height measurement accuracy
KW - Interferometry
KW - Perturbation
KW - STK
UR - http://www.scopus.com/inward/record.url?scp=84894567987&partnerID=8YFLogxK
U2 - 10.1049/cp.2013.0185
DO - 10.1049/cp.2013.0185
M3 - Conference contribution
AN - SCOPUS:84894567987
SN - 9781849196031
T3 - IET Conference Publications
BT - IET International Radar Conference 2013
Y2 - 14 April 2013 through 16 April 2013
ER -