Angle-of-arrival estimation error due to the presence of coherent multipath planewaves

Author

Shahmirian, V. ; Kesler, S.B.

Author_Institution

Dept. of Phys./Electron. Eng., Scranton Univ., PA, USA

fYear

1988

fDate

6-10 June 1988

Firstpage

262

Abstract

An analysis is presented of the performance of a singular valued decomposition (SVD) based method for estimating the angles of arrival of the radiating sources. This method, proposed by R. Kumaresen and D.W. Tufts (see IEEE Trans. Aerosp. Elect. Syst. vol.AES-19, p.134-139, Jan. 1983), is called the modified forward-backward linear production (MFBLP) and is based on the SVD of the data matrix. As a result of forward-backward averaging, the coherency between two coherent multipath signals is removed to the extent that, the intersignal correlation becomes a function of the cosine of the constant phase angle. The MFLB method is analyzed in the presence of two coherent multipath signals, and an expression for the RMS error of the estimated angle-of-arrival is derived in terms of physical parameters such as signal-to-noise ratio, the angle separation the constant phase, and number of snapshots.<>

Keywords

error analysis; filtering and prediction theory; radio direction-finding; radiowave propagation; signal detection; signal processing; RMS error; angle separation; angles of arrival; coherent multipath planewaves; coherent multipath signals; constant phase angle; cosine; data matrix; estimation error; forward-backward averaging; intersignal correlation; modified forward-backward linear production; radar signal processing; radiating sources; signal-to-noise ratio; singular valued decomposition; snapshots; Covariance matrix; Estimation error; Least squares methods; Nonlinear filters; Performance analysis; Signal analysis; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1988. AP-S. Digest

Conference_Location

Syracuse, NY, USA

Type

conf

DOI

10.1109/APS.1988.94044

Filename

94044