TY - GEN
T1 - A Novel DEM Imaging Algorithm for Complex Terrain Based on GNSS-InBSAR System
AU - Gao, Jian
AU - Liu, Feifeng
AU - Wang, Zhanze
AU - Lv, Ruihong
AU - Xu, Zhixiang
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Global Navigation Satellite System (GNSS) based interferometric synthetic aperture radar(InSAR) can be considered as a distributed system. It is required to use digital elevation model (DEM) to obtain high-accuracy interferometric phase. However, using coarse DEM directly will make the edge of target's PSF distorted due to its low two-dimensional resolution. In this paper, a DEM imaging method that combines fitting and smoothing processing is proposed. The fitting processing is based on moving least square and the gaussian kernel with symmetrical transformation is used to realize the smooth effect. The experimental results show that the correlation coefficient of the associated points in imaging pairs has been improved, which proves the effectiveness of the algorithm.
AB - Global Navigation Satellite System (GNSS) based interferometric synthetic aperture radar(InSAR) can be considered as a distributed system. It is required to use digital elevation model (DEM) to obtain high-accuracy interferometric phase. However, using coarse DEM directly will make the edge of target's PSF distorted due to its low two-dimensional resolution. In this paper, a DEM imaging method that combines fitting and smoothing processing is proposed. The fitting processing is based on moving least square and the gaussian kernel with symmetrical transformation is used to realize the smooth effect. The experimental results show that the correlation coefficient of the associated points in imaging pairs has been improved, which proves the effectiveness of the algorithm.
KW - Global Navigation Satellite System based interferometric bistatic synthetic aperture radar(GNSS-InBSAR)
KW - deformation inversion
KW - digital elevation model (DEM) imaging
UR - http://www.scopus.com/inward/record.url?scp=85181082840&partnerID=8YFLogxK
U2 - 10.1109/Radar53847.2021.10027988
DO - 10.1109/Radar53847.2021.10027988
M3 - Conference contribution
AN - SCOPUS:85181082840
T3 - Proceedings of the IEEE Radar Conference
SP - 2616
EP - 2620
BT - 2021 CIE International Conference on Radar, Radar 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 CIE International Conference on Radar, Radar 2021
Y2 - 15 December 2021 through 19 December 2021
ER -