Localization of unintended passive emissions from radio controlled (RC) devices has a great importance due to security concerns. This paper analyzes the challenges of locating such devices in the presence of multipath fading by using angle of arrival (AoA) method for passive devices. Phased array processing, smooth multiple signal classification (Smooth MUSIC) algorithms are the methods used to...

In an uncoupled parallel array of bistable dynamical elements subject to a common noisy subthreshold rectangular signal, the signal-to-noise ratio (SNR) gain can be improved by tuning the internally added array noise. A SNR gain above unity is observed in certain regions of the array noise intensity. The maximum SNR gain is obtained as the size of the array goes to infinity. This form of stocha...

Main concepts in DSP include filtering, averaging, modulating, and correlating the signals in digital form to estimate characteristic parameter of a signal into a desirable form. This paper presents a brief concept of low power datapath impact for Digital Signal Processing (DSP) based biomedical application. Systolic array based digital filter used in signal processing of electrocardiogram anal...

Speech processing is based on time and frequency properties of signal. Originally, speech is an analog signal, but it is converted to digital signal for processing in computer. And it is an array for computer. In this study, it has been studied Turkish letters’ time and frequency domain analysis as statistically in Matlab and Excel. And the interesting results has been submitted.

This paper analyzes the influence of the space-time signal processing technique on the performance of GPS signal acquisition in conditions of strong broadband interference (jamming) and multipath. The space-time processing method used for effective mitigation of GPS interference before processing by a conventional acquisition algorithm is the Minimum Variance Distortionless Response beamforming...

Array Signal Processing (ASP) is a relatively new technique in Digital Signal Processing (DSP) with many potential applications in communication and speech processing. Direction of arrival (DOA) can be estimated using different techniques evolved with ASP. It is observed that subspace method provides superior performance in resolving closely spaced sources.

This paper presented a feature vector based spatial differential correlation DOA estimation algorithm. The algorithm uses the matrix properties, structure contains only spatial differential matrix of the correlation signal, and its characteristic value eigenvalue decomposition vectors, the value of each feature vector signal corresponds to a group of related, since the set of feature vectors co...

An array feed combining system for the recovery of signal-to-noise ratio (SNR) loss due to antenna reflector deformation has been implemented and is currently being evaluated on the Jet Propulsion Laboratory’s 34-meter DSS-13 antenna. In this system, the defocused signal field captured by a focal plane array feed is recovered using real-time signal-processing and signal-combining techniques. Th...

The suitable use of an antenna array at the base station of a communication system results in improved Signal to Interference Ratio (SIR). In this paper, Linear Array (LA), Circular Array (CA) and Concentric Circular Antenna Array (CCAA) are used at the base station of a direct sequence code division multiple access (CDMA) systems. To suppress multiple access interference (MAI), the proposed sc...