TY - JOUR
T1 - Estimation near "Zero Information" points
T2 - Angle-of-arrival near the endfire
AU - Bashan, Eran
AU - Weiss, Anthony J.
AU - Bar-Shalom, Yaakov
PY - 2007/10
Y1 - 2007/10
N2 - We examine large-sample properties of the maximumlikelihood estimator (MLE) in the vicinity of points where the Fisher information measure (FIM) equals zero. Under mild regularity conditions the MLE is asymptotically efficient and therefore lower bounded by the Cramér-Rao lower bound (CRLB) [5], which diverges for such points. When a linear sensor array is used for angle-of-arrival (AOA) estimation, the CRLB diverges as the AOA approaches π/2. We provide new results characterizing the MLE performance in the AOA problem.
AB - We examine large-sample properties of the maximumlikelihood estimator (MLE) in the vicinity of points where the Fisher information measure (FIM) equals zero. Under mild regularity conditions the MLE is asymptotically efficient and therefore lower bounded by the Cramér-Rao lower bound (CRLB) [5], which diverges for such points. When a linear sensor array is used for angle-of-arrival (AOA) estimation, the CRLB diverges as the AOA approaches π/2. We provide new results characterizing the MLE performance in the AOA problem.
UR - http://www.scopus.com/inward/record.url?scp=40449138242&partnerID=8YFLogxK
U2 - 10.1109/TAES.2007.4441737
DO - 10.1109/TAES.2007.4441737
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AN - SCOPUS:40449138242
SN - 0018-9251
VL - 43
SP - 1250
EP - 1264
JO - IEEE Transactions on Aerospace and Electronic Systems
JF - IEEE Transactions on Aerospace and Electronic Systems
IS - 4
ER -