The Maximum entropy principle in spectral analysis
was used as an estimator of Direction of Arrival (DoA) of
electromagnetic or acoustic sources impinging on an array of sensors,
indeed the maximum entropy operator is very efficient when the
signals of the radiating sources are ergodic and complex zero mean
random processes which is the case for cosmic sources. In this paper,
we present basic review of the maximum entropy method (MEM)
which consists of rank one operator but not a projector, and we
elaborate a new operator which is full rank and sum of all possible
projectors. Two dimensional Simulation results based on Monte
Carlo trials prove the resolution power of the new operator where the
MEM presents some erroneous fluctuations.
 Youssef Khmou, Said Safi and Miloud Frikel, "Comparative Study
between Several Direction Of Arrival Estimation Methods", Journal of
Telecommunications and Information Technology, p.41-p.48, 1/2014.
 Khmou, Y. , Safi, S. (2014). 'Angles of Arrival Estimation with Unitary
Partial Propagator'. World Academy of Science, Engineering and
Technology, International Science Index 89, International Journal of
Mathematical, Computational, Physical and Quantum Engineering, 8(5),
846 - 849.
 Khmou, Y. , Safi, S. (2014). 'Angle of Arrival Detection with Fifth
Order Phase Operators '. World Academy of Science, Engineering and
Technology, International Science Index 90, International Journal of
Mathematical, Computational, Physical and Quantum Engineering, 8(6),
950 – 953.
 L.C.Godora, (1997), Application of Antenna Arrays to mobile
Communications.Beamforming and Direction-of-Arrival considerations,
Proceedings of IEEE , Vol. 85, No.8 ,pp 1195-1245.
 Rym Feliachi, Traitement spatial des interférences cyclostationnaires
pour les radiotélescopes à réseau d’antennes phasé (English thesis),
University of Orleans, April 12, 2010.
 Hamid Krim and Mats Viberg," Two Decades of Array Signal
Processing Research”, IEEES Signal Processing Magazine, vol. 13, pp.
 Schimdt,R.O ., " Multiple Emitter Location and Signal Parameter
Estimation," IEEE Trans. On Antennas Propagation, Vol.34, No.3,
March 1986, pp.276-280.
 J.Capon, “High Resolution frequency-wavenumber spectral analysis,"
Proceeding of the IEEE, vol. 57 ,pp. 1408-1518,Aug 1969.