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Information × Registration Number 0221U101567, 0119U100366 , R & D reports Title Increasing the effectiveness of coherent-pulse radar stations in complicated operating conditions. popup.stage_title Head Piza Dmytro M, Доктор технічних наук Registration Date 22-01-2021 Organization Zaporizhzhya National Technical University popup.description2  The object of research - the way of processing the radar signals in difficult conditions of radar operation. The aim of the work is increasing of the efficiency of coherent-pulse radars in difficult operating conditions by developing and improving methods of radar signal processing. The analysis of the signal-interference environment in modern conditions of radar operation was carried out. Given the decorrelation of the ANI by passive interference, a method for assessing the presence of passive interference in the elevational channels of the radar has been developed. The proposed method provides a selection of the range interval and the method of forming CTS, that generated only by ANI. The methods of realizing of the interference protection systems with the structural - parametric adaptation of spatial filters in time and frequency domain are offered. The structural adaptation by using of the proposed way of calculation of the module of the weights for the spatial filter eliminates the possibility of distortion of the main beam MAP in the case when the ANI during the antenna scanning shifts from the direction of the side lobes to the direction of the main beam. This makes it impossible to degrade the accuracy of measuring the angular coordinates and sensitivity of the radar. By applying structural adaptation, multichannel parallel-serial signal processing according to the Gram-Schmidt algorithm has been improved. Mathematical models of spatial filters with parametric and structural-parametric adaptation in the time and frequency (after the coherent accumulation of signals) region have been developed. Product Description popup.authors Minzak Nataliia V. Morshchavka Sergij V. Piza Dmytro M Romanenko Serhii M. popup.nrat_date 2021-01-22 Close