TY - GEN
T1 - Aeromagnetic compensation based on truncated singular value decomposition with an improved parameter-choice algorithm
AU - Gu, Bin
AU - Li, Qingli
AU - Liu, Hongying
PY - 2013
Y1 - 2013
N2 - As aircraft magnetic interference is much larger than the resolution of magnetic sensors, aeromagnetic compensation is increasingly important with the development of modern airborne magnetometers. Due to the ill-conditioning of Tolles-Lawson model, some regularization method, instead of ordinary least-squares (OLS), has to be employed to predict the magnetic interference caused by aircraft's motion. This paper aims to provide a candidate method to reduce such interference. The truncated singular value decomposition (TSVD) is used as a main tool to estimate compensation coefficients. In order to select an appropriate regularization parameter for TSVD, an improved parameter-choice method, L-curve criterion with defined origin algorithms (LO) is proposed in this paper to locate the global corner of the discrete L-curve rather than small local ones. Simulation results demonstrate that the proposed combined method (TSVD-LO) can reduce the magnetic interference to a large extent.
AB - As aircraft magnetic interference is much larger than the resolution of magnetic sensors, aeromagnetic compensation is increasingly important with the development of modern airborne magnetometers. Due to the ill-conditioning of Tolles-Lawson model, some regularization method, instead of ordinary least-squares (OLS), has to be employed to predict the magnetic interference caused by aircraft's motion. This paper aims to provide a candidate method to reduce such interference. The truncated singular value decomposition (TSVD) is used as a main tool to estimate compensation coefficients. In order to select an appropriate regularization parameter for TSVD, an improved parameter-choice method, L-curve criterion with defined origin algorithms (LO) is proposed in this paper to locate the global corner of the discrete L-curve rather than small local ones. Simulation results demonstrate that the proposed combined method (TSVD-LO) can reduce the magnetic interference to a large extent.
KW - Aeromagnetic compensation
KW - L-curve criterion (LO)
KW - Measurements
KW - Signal processing
KW - Truncated singular value decomposition (TSVD)
UR - https://www.scopus.com/pages/publications/84897764878
U2 - 10.1109/CISP.2013.6743921
DO - 10.1109/CISP.2013.6743921
M3 - 会议稿件
AN - SCOPUS:84897764878
SN - 9781479927647
T3 - Proceedings of the 2013 6th International Congress on Image and Signal Processing, CISP 2013
SP - 1545
EP - 1551
BT - Proceedings of the 2013 6th International Congress on Image and Signal Processing, CISP 2013
T2 - 2013 6th International Congress on Image and Signal Processing, CISP 2013
Y2 - 16 December 2013 through 18 December 2013
ER -