TY - JOUR
T1 - Methods for Improving the Stability of Electromagnetic Geophysical Inversions
AU - Frank, Mark
AU - Balanis, Constantine
N1 - Funding Information:
Manuscript received November 9. 1987; rcvised September 22, 1988. This work was supported by thc U.S. Army Research Office under Research Contract DAAG29-85-K-0045. The authors arc with the Department of Electrical and Computer Engi- neering. Arizona State Univerhity. Tempe, AZ 85287. IEEE Log Number 8926435.
PY - 1989/5
Y1 - 1989/5
N2 - In this paper, two methods are presented for improving the stability of geophysical inversions. The first method uses the weighted least squares technique to reduce the effects of additive noise in the measurement data. This is accomplished by giving a lesser weight to those measurements that are thought to be more noisy. Some simulations are presented that demonstrate the effectiveness of this method. In addition to the above method, we explore the possibility of using post-reconstruction image processing to reduce the effects of noise in the measurements. A new technique, which is referred to here as mini-mux partitioning, is developed. This method, in conjunction with image filtering, is used to locate high contrast anomalies in a region. Examples are presented that show the superiority of this partitioning scheme over other techniques.
AB - In this paper, two methods are presented for improving the stability of geophysical inversions. The first method uses the weighted least squares technique to reduce the effects of additive noise in the measurement data. This is accomplished by giving a lesser weight to those measurements that are thought to be more noisy. Some simulations are presented that demonstrate the effectiveness of this method. In addition to the above method, we explore the possibility of using post-reconstruction image processing to reduce the effects of noise in the measurements. A new technique, which is referred to here as mini-mux partitioning, is developed. This method, in conjunction with image filtering, is used to locate high contrast anomalies in a region. Examples are presented that show the superiority of this partitioning scheme over other techniques.
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U2 - 10.1109/36.17676
DO - 10.1109/36.17676
M3 - Comment/debate
AN - SCOPUS:0024666216
VL - 27
SP - 339
EP - 343
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
SN - 0196-2892
IS - 3
ER -