SYSTEM AND METHOD FOR ESTIMATING POWER SPECTRAL DENSITY OF A SIGNAL DERIVED FROM A KNOWN NOISE SOURCE

摘要

An apparatus, system and method for estimating power spectral density (PSD). A processing apparatus and a test system are operatively coupled where a random signal generator produces a source signal comprising known statistical properties, and a first converter converts the source signal to a power spectral density (PSD) representation. The test system receives the source signal and produce an output signal, where a second converter converts the output signal to a second PSD representation, and an estimator estimates a magnitude-squared frequency response function (MSFRF) of the output signal and source signal. A weighting module may weight an estimation error factor based on at least one of a quality of the estimate and a user preference, and a removal module, removes a portion of the estimation error from the output signal PSD.

主权项

1. A system for estimating power spectral density (PSD), comprising:
a processing apparatus, comprising a random signal generator for producing a source signal comprising known statistical properties, and a first converter configured to convert the source signal to a power spectral density (PSD) representation; and a test system, operatively coupled to the processing apparatus, the test system configured to receive the source signal and produce an output signal, wherein the processing apparatus further comprises
a second converter configured to convert the output signal to a second PSD representation,an estimator configured to estimate a magnitude-squared frequency response function (MSFRF) of output signal and source signal,a weighting module, configured to weight an estimation error factor based on at least one of a quality of the estimate and a user preference, anda removal module, to remove a portion of the estimation error from the output signal PSD.