High-precision sinusoidal frequency estimator based on weighted least square method

  title={High-precision sinusoidal frequency estimator based on weighted least square method},
  author={Y. C. Jenq},
  journal={IEEE Transactions on Instrumentation and Measurement},
  • Y. C. Jenq
  • Published 1987 in
    IEEE Transactions on Instrumentation and…
The estimation of the frequency of a sine wave is a fundamental task in many test and measurement systems. In this report, a frequency estimator based on the weighted least-square method (WLSM) is derived. The estimator is optimal in the sense that it is unbiased, and it has the smallest standard deviation among the whole class of linear estimators. A well-approximated normalized standard deviation of the estimator is obtained in closed form. It is shown that the normalized standard deviation… CONTINUE READING


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