In many cases where direction nding is of interest, the signals impinging on an antenna array are known to be phase modulated, hence to have a constant mod-ulus (CM). This is a strong property, by itself already suucient for source separation, and can be used to construct improved direction nding algorithms. We rst present the relevant Cramer-Rao bounds for arbitrary array conngurations, and ar...

Accurate geolocation and tracking of Radio-Frequency Interference (RFI) sources, which affect wireless satellite systems such as Global Navigation Satellite Systems (GNSS) Communication (SatCom) systems, are considered to be a significant issue. Several studies connected civil military operations on this issue have been investigated recently. The literature review has surveyed many algorithm si...

Some quasi-arithmetic means of random variables easily give unbiased strongly consistent closed-form estimators the joint location and scale parameters Cauchy distribution. The one-step those distribution are considered. We establish Bahadur efficiency maximum likelihood estimator estimators. also show that rate convergence mean-squared errors achieves Cramer-Rao bound. Our results applicable t...