Maximum likelihood azimuth estimation applied to SSR/IFF systems

Author

Galati, G. ; Studer, E.A.

Author_Institution

Dept. of Electron. Eng., Tor Vergata Univ., Rome, Italy

Volume

26

Issue

1

fYear

1990

fDate

1/1/1990 12:00:00 AM

Firstpage

27

Lastpage

43

Abstract

A conventional (nonmonopulse) secondary surveillance radar (SSR) is significantly cheaper than a monopulse SSR but exhibits much greater azimuthal error, especially when some of the replies are missing. Estimation techniques and their performance are discussed with special reference to SSR applications, and a novel estimator for conventional SSR is described. The proposed technique is a close approximation of the maximum-likelihood estimator (MLE), taking into account the receiver characteristics as well as the missed replies. Estimator performance obtained by analysis and computer simulation is compared with that of conventional estimators that are based on the leading and trailing edges of binary sequences and shows significantly improved accuracy

Keywords

computerised signal processing; digital simulation; radar theory; telecommunications computing; ATC; azimuth estimation; computer simulation; maximum-likelihood estimator; secondary surveillance radar; Air traffic control; Antennas and propagation; Application software; Azimuth; Maximum likelihood detection; Maximum likelihood estimation; Radar antennas; Radar detection; Reflector antennas; Surveillance;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.53411

Filename

53411