Abstract—One of the most interesting approaches to the blind source separation problem consists in the use of an appropriate contrast function. Higher-order contrast functions have been proved to be efficient for extracting sources. This paper presents an application of blind source separation in case of convolutive mixture based on frequency and time domain approaches. This work deals with the problem of the multisource limitation of the nutating rising-sun reticle based optical trackers. To resolve this problem, a beam splitter through the modification of the optical trackers has been successfully applied for tracking and discrimination of both coherent and incoherent optical sources based on the semi-blind source separation approach. Furthermore, in relation to frequency-domain algorithm, it has been shown that the time domain algorithm is theoretically consistent without any permutation and amplitude indeterminacy problems.

Index Terms—Blind source separation, Contrast functions, Cumulants, Higher order statistics, Rising-sun reticle.

The Authors are with the Shahid Rajaee Teacher Training University, Department of Electrical Engineering, Nano-Photonics and Optoelectronics Research Laboratory, Lavizan, 16788, Tehran, Iran. Tel/Fax: +98 (21) 22970006; Email: {s_olyaee, mshams, rebrahimpour, moradian}@srttu.edu.

Cite: Saeed Olyaee, Mohammad Shams Esfand Abadi, Reza Ebrahimpour and Mohammad Reza Moradian, "A Comparative Study of Two Blind Source Separation Approaches to Resolve the Multi-Source Limitation of the Nutating  Rising-Sun  Reticle  Based  Optical  Trackers,"  International  Journal  of  Computer  and  Electrical
Engineering vol. 2, no. 2, pp. 283-291, 2010.