TY - JOUR
T1 - 3-D Deformation Measurement Based on Three GB-MIMO Radar Systems
T2 - Experimental Verification and Accuracy Analysis
AU - Deng, Yunkai
AU - Hu, Cheng
AU - Tian, Weiming
AU - Zhao, Zheng
N1 - Publisher Copyright:
© 2004-2012 IEEE.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - An experiment which involves the simultaneous deployment of three ground-based multiple-input multiple-output (GB-MIMO) radar systems to measure 3-D deformation of a displaceable corner reflector (DCR) is outlined in this letter. The DCR successively displaces in three mutually orthogonal directions and each radar measures 1-D deformation independently. Since the displacement directions of the DCR cannot be measured, they are estimated by solving a nonlinear equation set based on the rotation relationship between two 3-D coordinate systems, whose effectiveness is verified by simulation. Considering that the measurement accuracies of the DCR's displacements along three axial directions of a 3-D coordinate system, that is, 3-D deformation, are related with how the coordinate system is built, the geometric dilution of precision (GDOP) is then utilized to take accuracy analysis. The measured and theoretical GDOP are rather close, which validates the feasibility of 3-D deformation measurement with three radar systems.
AB - An experiment which involves the simultaneous deployment of three ground-based multiple-input multiple-output (GB-MIMO) radar systems to measure 3-D deformation of a displaceable corner reflector (DCR) is outlined in this letter. The DCR successively displaces in three mutually orthogonal directions and each radar measures 1-D deformation independently. Since the displacement directions of the DCR cannot be measured, they are estimated by solving a nonlinear equation set based on the rotation relationship between two 3-D coordinate systems, whose effectiveness is verified by simulation. Considering that the measurement accuracies of the DCR's displacements along three axial directions of a 3-D coordinate system, that is, 3-D deformation, are related with how the coordinate system is built, the geometric dilution of precision (GDOP) is then utilized to take accuracy analysis. The measured and theoretical GDOP are rather close, which validates the feasibility of 3-D deformation measurement with three radar systems.
KW - 3-D
KW - accuracy analysis
KW - deformation measurement
KW - geometric dilution of precision (GDOP)
KW - ground-based multiple-input multiple-output (GB-MIMO) radar
UR - http://www.scopus.com/inward/record.url?scp=85120406208&partnerID=8YFLogxK
U2 - 10.1109/LGRS.2020.3014342
DO - 10.1109/LGRS.2020.3014342
M3 - Article
AN - SCOPUS:85120406208
SN - 1545-598X
VL - 18
SP - 2092
EP - 2096
JO - IEEE Geoscience and Remote Sensing Letters
JF - IEEE Geoscience and Remote Sensing Letters
IS - 12
ER -