Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/121417
Title: Two-Dimensional Deformation Measurement Based on Multiple Aperture Interferometry in GB-SAR
Authors: Cheng Hu;Yunkai Deng;Rui Wang;Weiming Tian;Tao Zeng
Year: 2017
Publisher: IEEE
Abstract: Ground-based synthetic aperture radar (GB-SAR) technique has been widely applied for the deformation monitoring and measurement of the natural and engineered slopes. To extend the 2-D deformation measurement from the conventional 1-D measurement along the radar-target line of sight (LOS), multiple aperture interferometry (MAI) techniques based on phase differences between interferograms of the forward-looking and backward-looking subapertures are tackled in this letter. The optimal subaperture selection is analyzed considering the typical signal-to-noise ratios and correlations in GB-SAR applications. Simulations prove that the coherent integration (CIM) can be utilized to improve the measurement accuracy of the MAI method. Besides, GB-SAR experiments are carried out to validate the feasibility and effectiveness of the 2-D deformation measurement method based on MAI. Accuracy comparison of deformation measurement with the MAI and cross correlation methods is also taken. Experimental results show that the accuracy of deformation measurement along the perpendicular direction to LOS based on MAI and CIM can reach millimeter level for displaceable corner reflector.
URI: http://localhost/handle/Hannan/121417
volume: 14
issue: 2
More Information: 208,
212
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7797136.pdf1.54 MBAdobe PDF
Title: Two-Dimensional Deformation Measurement Based on Multiple Aperture Interferometry in GB-SAR
Authors: Cheng Hu;Yunkai Deng;Rui Wang;Weiming Tian;Tao Zeng
Year: 2017
Publisher: IEEE
Abstract: Ground-based synthetic aperture radar (GB-SAR) technique has been widely applied for the deformation monitoring and measurement of the natural and engineered slopes. To extend the 2-D deformation measurement from the conventional 1-D measurement along the radar-target line of sight (LOS), multiple aperture interferometry (MAI) techniques based on phase differences between interferograms of the forward-looking and backward-looking subapertures are tackled in this letter. The optimal subaperture selection is analyzed considering the typical signal-to-noise ratios and correlations in GB-SAR applications. Simulations prove that the coherent integration (CIM) can be utilized to improve the measurement accuracy of the MAI method. Besides, GB-SAR experiments are carried out to validate the feasibility and effectiveness of the 2-D deformation measurement method based on MAI. Accuracy comparison of deformation measurement with the MAI and cross correlation methods is also taken. Experimental results show that the accuracy of deformation measurement along the perpendicular direction to LOS based on MAI and CIM can reach millimeter level for displaceable corner reflector.
URI: http://localhost/handle/Hannan/121417
volume: 14
issue: 2
More Information: 208,
212
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7797136.pdf1.54 MBAdobe PDF
Title: Two-Dimensional Deformation Measurement Based on Multiple Aperture Interferometry in GB-SAR
Authors: Cheng Hu;Yunkai Deng;Rui Wang;Weiming Tian;Tao Zeng
Year: 2017
Publisher: IEEE
Abstract: Ground-based synthetic aperture radar (GB-SAR) technique has been widely applied for the deformation monitoring and measurement of the natural and engineered slopes. To extend the 2-D deformation measurement from the conventional 1-D measurement along the radar-target line of sight (LOS), multiple aperture interferometry (MAI) techniques based on phase differences between interferograms of the forward-looking and backward-looking subapertures are tackled in this letter. The optimal subaperture selection is analyzed considering the typical signal-to-noise ratios and correlations in GB-SAR applications. Simulations prove that the coherent integration (CIM) can be utilized to improve the measurement accuracy of the MAI method. Besides, GB-SAR experiments are carried out to validate the feasibility and effectiveness of the 2-D deformation measurement method based on MAI. Accuracy comparison of deformation measurement with the MAI and cross correlation methods is also taken. Experimental results show that the accuracy of deformation measurement along the perpendicular direction to LOS based on MAI and CIM can reach millimeter level for displaceable corner reflector.
URI: http://localhost/handle/Hannan/121417
volume: 14
issue: 2
More Information: 208,
212
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7797136.pdf1.54 MBAdobe PDF