Digital Signal Processing Handbook P63

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Digital Signal Processing Handbook P63

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Estimating the directions of arrival (DOAs) of propagating planewaves is a requirement ina variety of applications including radar, mobile communications, sonar, and seismology. Due to its simplicity and high-resolution capability, ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques) [18] has become one of the most popular signal subspace-basedDOAor spatial frequency estimation schemes. ESPRIT is explicitly premised on a point source model for the sources and is restricted to use with array geometries that exhibit so-called invariances [18]....

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