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Estimation of signal parameters via rotational invariance techniques
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<p>Estimation of signal parameters via rotational invariant techniques (ESPRIT), is a technique to determine the parameters of a mixture of <a href="/facts/Sine_wave/mD1CB09M">sinusoids</a> in background noise. This technique was first proposed for frequency estimation. However, with the introduction of <a href="/facts/Phased-array/5wvA9WLV">phased-array</a> systems in everyday technology, it is also used for <a href="/facts/Angle_of_arrival/1nCYSrRg">angle of arrival</a> estimations. </p>