منابع مشابه
Single snapshot DOA estimation
In array signal processing, direction of arrival (DOA) estimation has been studied for decades. Many algorithms have been proposed and their performance has been studied thoroughly. Yet, most of these works are focused on the asymptotic case of a large number of snapshots. In automotive radar applications like driver assistance systems, however, only a small number of snapshots of the radar sen...
متن کاملCross-coupled DOA trackers
output and the exact derivative of the bandlimited signal used in this simulation. Similar to the previous examples of Figs. 5 and 8, the interpolation error may be controlled by the tradeoff between computing time and accuracy. In this case, only the first six rows of the matrix Cu were retained for an overall error of 075 dB. IV. CONCLUSIONS The design [3] of digital filters whose output equa...
متن کاملA Robustness Property of DOA
| A simple general formula is derived under a Gaussian model for the asymptotic covariance of direction-of-arrival (DOA) estimators based on the covariance of the sensor array data. It is then established that the same formula remains valid for a wide class of statistical models for source signals. Hence, under mild assumptions, the asymp-totic performance of most high-resolution covariance-bas...
متن کاملDOA estimation with hexagonal arrays
Hexagonal arrays are widely used in practice but have received less attention in the optimum array processing literature. In this paper, we show how unitary ESPRIT can be applied to hexagonal arrays for direction-of-arrival (DOA) estimation. The resulting estimates exhibit good threshold behavior, and are close to the Cramer-Rao bound above threshold. We also show how to use spatial smoothing i...
متن کاملDOA Estimation of Nonstationary Signals
In this Chapter, we discuss the direction finding problem of sources emitting or inducing nonstationary signals. The focus is on signals which are uniquely characterized by their instantaneous frequencies. Recognizing the quadratic time-frequency distributions as an effective tool to localize signal power in the time-frequency domain, we present nonstationary array processing in the context of ...
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ژورنال
عنوان ژورنال: PUTIH: Jurnal Pengetahuan Tentang Ilmu dan Hikmah
سال: 2017
ISSN: 2622-223X,2598-7607
DOI: 10.51498/putih.v2i1.45