Abstract— In this paper, the double-directional channel measurement and spatio-temporal analysis of UWB propagation based on the clusterization approach were reported. After separating the deterministic and diffuse components on both transmit (Tx) and Receive (Rx) positions, the clusters can be coupled based on similar time of arrivals (TOAs). The relation of direction of departure (DOD) and di...

This paper proposes a DOA(Direction Of Arrival) estimation system using chip sized phase shifters and a single ADC(Analogue to Digital Converter) and Rx(Receiver) module under the antenna elements[1]. The proposed system is only controlled by the phase of antenna to find the DOA of target. To obtain the low cost and portable DOA system[2] used as surveillance system in outdoor, we propose a mod...

It is well known that wireless sensor network become more and more popular in modern communication systems. The DOA estimating theory is used to renew system topology and routing method of the whole network which is of great important in military communication. In this work, we raised an enhanced DOA (Direction of Arrival) estimating method which is used in wireless military sensor networks wit...

In this paper, the problem of Direction of Arrival (DOA) estimation of multiple sources is addressed considering possible coherence loss along the impinging wavefronts. The loss results from wave propagation through a fluctuating medium and leads to a decreasing signal correlation from sensor to sensor. Two new algorithms are proposed that are significantly less computationally complex than the...

Computing the Eigen Value Decomposition (EVD) of a symmetric matrix is a frequently encountered problem in adaptive (or smart or software) antenna signal processing, for example, super resolution DOA (Direction Of Arrival) estimation algorithms such as MUSIC (MUltiple SIgnal Classification) and ESPRIT(Estimation of Signal Parameters via Rotational Invariance Technique). In this paper the hardwa...

Direction-of-arrival (DOA) estimation algorithms deliver very precise results based on good and extensive antenna array calibration. The better the array manifold including all disturbances is known, the better the DOA estimation result. A simplification or ideally an omission of the calibration procedure has been a long pursued goal in the history of array signal processing. This paper investi...

One of issues related to videoconferencing is addressed in the paper, namely the problem of sound source localization. A new neural approach for estimation direction of arrival (DOA) is presented and discussed therein. The introduced algorithms are based on various types and structures of neural networks, including feedforward and recurrent ones. Considerations of the proposed DOA estimation ar...

The Royal Netherlands Meteorological Institute has continuously operated an outdoor atmospheric infrasound array containing 37 pairs of particle velocity sensors (Microflown) and 6 pressure sensors in the north of the Netherlands in the fall of 2008. As initial results, we detected transients caused by distant aircrafts and calculated their Direction of Arrival (DOA). A nearby sound-source, pro...

In the study of the joint estimation of time-frequency signature and direction of arrival (DOA) for multicomponent chirp signals, an estimation method based on spatial time-frequency distributions (STFDs) is proposed in this paper. Firstly, array signal model for multicomponent chirp signals is presented and then array processing is applied in time-frequency analysis to mitigate cross-terms. Ac...

In this correspondence, the two-dimensional (2-D) direction-of-arrival (DOA) estimation problem for partially polarized (PP) signals is considered. In particular, we focus on an array geometry containing three identical uniform linear arrays (ULAs). Compared with existing methods, the proposed one has three main advantages. Firstly, the estimation accuracy is higher since it exploits the polari...