K.P. Kulturmidi

Krasnodar Higher Military Aviation School for Pilots named after Hero of the Soviet Union A.K. Serov
(Krasnodar, Russia)

The use of the medium pulse repetition frequency mode in the airborne radar is accompanied by the problem of the presence of powerful interfering reflections from the underlying surface along the side lobes of the antenna pattern, which lead to a decrease in the accuracy of measuring the coordinates and motion parameters of air targets.

Purpose – improving the accuracy of measuring the range and speed of an air target.

A method for estimating the level of the signal of interfering reflections based on the analysis of the signal of the compensation channel is proposed. An expression is obtained for finding the likelihood functional of the ambiguous delay time of the reflected signal and the Doppler frequency, which underlies the quasi-optimal algorithm for measuring range and speed. An algorithm for selecting pulse repetition frequencies is proposed, the implementation of which makes it possible to increase the accuracy of measuring the range and speed of an air target.

The implementation of the algorithms discussed in the article will improve the efficiency of the use of on-board radio-electronic systems in solving the problem of determining the coordinates and parameters of the movement of air targets.

Kulturmidi K.P. Improving the accuracy of measurement range and speed air target radar mode medium pulse repetition frequency by estimation the signal level of background returns. Radiotekhnika. 2022. V. 86. № 3. P. 68−76. DOI: https://doi.org/10.18127/j00338486-202203-07 (In Russian)

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