Frequency Diverse Array Radar With Adaptive LCMV Beamforming

The frequency diverse array (FDA) with such a constant interelement frequency offset produces an "S-shaped" beam pattern that has maxima at different range and angle values. By interfering with the target returns at any of the maxima, a variety of reflectors are able to take advantage of this phenomenon, which lowers the signal-to-interference-plus-noise ratio. In this study, we propose an adaptive linear constrained minimum variance (LCMV) beamforming methodology with multicarrier frequency increments for creating dot-shape transmit beampatterns. The elements of the FDA would be evenly spaced apart. According to the specified range and angle values, the suggested design generates individual as well as double dot-shape beamforming that is at its best. This method has been mathematically investigated and validated using the numerical findings that were obtained. Moreover, it improves side-lobe suppression and transmits energy concentrating for both the traditional FDA and Log-FDA types, which are already available FDA kinds with uniform interelement offset.