Monopulse DOA estimation of two unresolved Rayleigh targets

Author

Blair, W.D. ; Brandt-Pearce, M.

Author_Institution

Georgia Tech. Res. Inst., Atlanta, GA, USA

Volume

37

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

452

Lastpage

469

Abstract

This paper provides for new approaches to the processing of unresolved measurements as two direction-of-arrival (DOA) measurements for tracking closely spaced targets rather than the conventional single DOA measurement of the centroid. The measurements of the two-closely spaced targets are merged when the target echoes are not resolved in angle, range, or radial velocity (i.e., Doppler processing). The conditional Cramer Rao lower bound (CRLB) is developed for the DOA estimation of two unresolved Rayleigh targets using a standard monopulse radar. Then the modified CRLB is used to give insight into the boresight pointing for monopulse DOA estimation of two unresolved targets. Monopulse processing is considered for DOA estimation of two unresolved Rayleigh targets with known or estimated relative radar cross section (RCS). The performance of the DOA estimator is studied via Monte Carlo simulations and compared with the modified CRLB

Keywords

Doppler radar; Monte Carlo methods; direction-of-arrival estimation; radar cross-sections; radar tracking; target tracking; Doppler processing; Monte Carlo simulation; direction-of-arrival estimation; modified Cramer Rao lower bound; monopulse radar; radar cross section; target tracking; unresolved Rayleigh targets; Amplitude estimation; Direction of arrival estimation; Doppler radar; Frequency estimation; Maximum likelihood detection; Radar cross section; Radar tracking; Standards development; Target tracking; Velocity measurement;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.937461

Filename

937461