Title :
Accuracy of angle estimation with monopulse processing using two beams
Author :
Nielsen, Rasmus Orndrup
Author_Institution :
Boeing Co., Anaheim, CA
fDate :
10/1/2001 12:00:00 AM
Abstract :
Expressions are provided for the accuracy of monopulse angle estimation using two beams. It is shown that, if the signal angle is halfway between the angles of the beams, the Cramer-Rao lower bound (CRLB) for monopulse processing is almost as small as the CRLB obtained if the entire array of sensors is used. The monopulse CRLB is considerably poorer if the angle of the signal is equal to that of one of the two beams. The expressions in this correspondence are for a uniformly weighted linear array of M equally spaced sensors, for which N⩾M beams are formed
Keywords :
array signal processing; covariance matrices; direction-of-arrival estimation; radar signal processing; Cramer-Rao lower bound; discrete Fourier transform; equally spaced sensors; estimation accuracy; matched filter; monopulse angle estimation; monopulse processing; noise covariance matrix; uniformly weighted; Discrete Fourier transforms; Frequency; Geometry; Goniometers; Image sensors; Matched filters; Phased arrays; Radar theory; Sensor arrays; Signal processing;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
