New digital signal processing algorithms for frequency deviationmeasurement

摘要

Two digital signal processing algorithms for frequency deviationmeasurement are introduced. The algorithms are derived using a newsignal processing scheme based on quadratic forms of signal samples.These algorithms provide high measurement accuracy over a wide range offrequency changes. One is designed for measurements of small deviationsof the nominal frequency, whereas the other one measures off-nominalfrequency deviations. The performance of the algorithms is evaluatedusing computer simulation tests