A.K. Кiriakmasov1

1 JSC "VNIIRT" (Moscow, Russia)

Problem. The implementation of adaptive spatial filtering in modern digital phased array antennas with a large number of elements requires high computing performance. Therefore, the search and analysis of various options for reducing the computational complexity of the adaptive spatial filtering problem without reducing the efficiency of the solution is an urgent task. A natural way to reduce computational complexity is to reduce the number of adaptive weighting coefficients, one of the variants of which is an adaptive spatial filtering scheme with a dedicated main channel.

Target. To investigate the effectiveness of an adaptive spatial filtering scheme with a dedicated main channel in various conditions.

Results. The potential characteristics (for idealized conditions) and real characteristics (in the presence of limiting factors in the form of amplitude-phase errors, a finite number of training samples and signal decorrelation in the lattice channels) determining the effectiveness of the adaptive spatial filtering scheme with a dedicated main channel are evaluated.

Practical significance. The obtained efficiency estimates and the noted features of the adaptive spatial filtering scheme with a dedicated main channel allow it to be more correctly and fully compared with other options for implementing the adaptive spatial filtering task, which ultimately ensures the selection of the most suitable option for a given configuration of the radar station.

Кiriakmasov A.K. Adaptive space filtering scheme with allocated main channel in digital phased antenna array. Achievements of modern radioelectronics. 2023. V. 77. № 3. P. 34–43. DOI: https://doi.org/10.18127/j20700784-202303-03 [in Russian]

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