A.A. Skripkin1, V.A. Shcherbachev2, N.E. Podchinenko3

1–3 JSC «All-Russian Scientific Research Institute «Gradient» (Rostov-on-Don, Russia)

The accuracy of joint estimation of differential delays and frequency shifts in digital measurements should be improved. The direct way to reduce the sampling error by increasing the sample rate causes a significant increase in the computational load, that is unacceptable when the estimator operates in real time.

The synthesis of a computationally efficient method for the joint estimation of difference delays and frequency shifts in digital measurements makes it possible to reduce systematic errors.

A computationally efficient method for the joint estimation of difference delays and frequency shifts in digital measurements, which reduces systematic errors (caused by the discreteness of measurements), without increasing the computational load, is proposed. An experimental study of the proposed method was performed and the achievability of measurement accuracy close to the potential one under the given conditions was shown.

Skripkin A.A., Shcherbachev V.A., Podchinenko N.E. Reducing the systematic error in digital correlation measurement of differential delays and frequency shifts. Radioengineering. 2022. V. 86. № 11. P. 42−48. DOI: https://doi.org/10.18127/j00338486-202211-07 (in Russian)

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