Some algorithms for the solution of handed Toeplitz sys-tems calculate certain elements of the solution first and then the re-maining elements by forward or backward substitution. We show that,for symmetric matrices, this method is almost always highly unstable.A numerical example is given to support the argument.

Among multi-access communications techniques, CDMA (Code Division Multiple Access) is interference-limited. Conventional single-user receivers su er from the nearfar problem in CDMA cellular communications systems. One method to suppress multi-access interference is digital beamforming by using base-station antenna arrays. However, using beamforming alone cannot solve the near-far problem. Verd...

In this paper, we present an algorithmic framework for signal-geometry-based approaches of GNSS spoofing detection. We formulate a simple vs. hypothesis test independent nuisance parameters that results in significantly reduced missed detection probability compared to prior approaches. It is highly tractable such it can be computed online by the receiver. employ iteration finds spoofed subsets ...

As the information carried in a high spatial resolution image is not represented by single pixels but by meaningful image objects, which include the association of multiple pixels and their mutual relations, the object based method has become one of the most commonly used strategies for the processing of high resolution imagery. This processing comprises two fundamental and critical steps towar...

the complexity of urban systems in our recent world, make it difficult to evaluation and explanation of their changes with traditional and customarily methods. in the past, remote sensing has shown an ability to detect and describe urban growth patterns at different spatial scales. with new remote sensing devices (e.g. ikonos), with innovative image processing techniques and with further develo...