A.M. Golik1, Yu.A. Shishov2, Yu.E. Tolstuha3

1-3 Saint-Petersburg Military Institute of National Guard Troops (Saint-Petersburg, Russia)

The use of broadband probing signals with a simultaneous increase in the linear dimensions of the aperture of a digital antenna array and the expansion of the sector of electronic scanning of its radiation pattern, providing an increase in the level of information content of a radar station, simultaneously lead to distortions of the phase distribution of the field on the antenna aperture and phase structure of the spectrum of the probing signal. The works known to date are focused on compensating for these distortions only when the radar is operating in the receive mode, while these distortions primarily arise during the formation and emission of a probing signal. In addition, well-known technical solutions relate only to pulsed radars, while radars with continuous emission of a probing signal are widely used, for which phase distortion compensation has its own technical features. The purpose of the research is to develop an algorithm for the mathematical support of the process of undistorted formation and control of the digital antenna array radiation pattern with a wide-angle electronic survey of space and broadband sounding of targets not only in the mode of receiving signals reflected from them, but also in the mode of emitting probing signals. In addition, it is necessary to propose options for the technical implementation of this algorithm for both pulsed and continuous-wave radars. Variants of the structures of the receiving-transmitting modules of a digital antenna array are proposed, which provide the technical implementation of the algorithm for undistorted formation and control of the digital antenna array radiation pattern not only in the receive mode, but also in the radiation mode for both pulsed and continuous-radiation radars of the probing signal. The technical implementation of the proposals developed in the article will significantly increase the level of information content of a radar with a digital antenna array under conditions of broadband target sensing with a wide-angle electronic survey of space.

Golik A.M., Shishov Yu.A., Tolstuha Yu.E. Directional pattern control of a digital antenna array in wide angle electronic space scanning and broadband target sensing. Radiotekhnika. 2022. V. 86. № 9. P. 71−84. DOI: https://doi.org/10.18127/j00338486-202209-09 (In Russian)

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