An Improved Method for Synthesizing Dual-Control Adaptive Pattern with Nulls and Gaps Based on Variable Reference Voltage

To solve the problem that the pattern synthesis method based on the adaptive beam forming with variable reference voltage cannot simultaneously control the nulls and gaps of the pattern, a pattern synthesis method based on the maximum signal-to-noise ratio (MSNR) for arbitrary arrays was proposed in this paper, focusing on the theoretical analysis of pattern synthesis methods to achieve the lowest side lobe level under a fixed main lobe width. Redefining the variable reference voltage parameters proposed by previous studies, the new variable reference voltage was designed to generate an anti-interference beam with controllable gaps and nulls, as well as equal side lobe levels under the condition of a fixed beam main lobe width. The effectiveness of the algorithm was verified by computer simulations. This method has provided with a significant practical value to improve the performance of phased array radar in resistance of clutters and interferences.