Interference Design Method for Wideband Transmitting Digital Beamforming Based on Second-Order Cone Programming

Abstract

The invention discloses a design method for wideband transmission digital beamforming interference based on second-order cone planning. The main idea is to determine a uniform line array and a wideband digital signal, the uniform line array includes M array elements, and divide the wideband digital signal. Road, get M wideband digital signals; then get M FIR filter impulse responses; each wideband digital signal is subjected to FIR filtering through the corresponding FIR filter impulse response, and M wideband after FIR filtering is obtained Digital signal; After performing digital / analog conversion, up-conversion processing, radio frequency filtering processing and amplification processing on each wideband digital signal after FIR filtering, M wideband signals after amplitude and phase processing are obtained; After the phase-processed broadband signals are transmitted into the air through corresponding array elements, broadband interference beams are obtained, and the broadband interference beams are the interference design results of broadband transmission digital beamforming based on second-order cone planning.

Description

technical field [0001] The invention belongs to the technical field of radar jamming, and in particular relates to a broadband transmission digital beamforming jamming design method based on second-order cone programming, which is suitable for the launch of broadband radar jamming signals. Background technique [0002] With the rapid development of solid-state power amplifier devices, a large number of jammers use solid-state power amplifiers for final stage amplification; due to the limited output power of single-chip solid-state power amplifiers, in order to achieve higher transmission power output, multi-chips are usually used for circuit synthesis; but as As the power increases, its synthesis efficiency will gradually decrease. In order to solve this problem, an array antenna can be used to perform spatial power synthesis through digital beamforming (DBF) or analog beamforming (ABF) technology; and digital beamforming technology has many analog Advantages that beamformin...

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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to propose a second-order cone programming-based broadband transmission digital beamforming interference design method. Each array element channel uses a corresponding broadband FIR filter to perform overall amplitude and phase modulation on the broadband interference signal to be transmitted, which avoids the problem that the phase cannot be connected after the broadband signal is divided into sub-bands for processing; in addition, the interference beam is optimized The design goal is generally to make the formed interference beam have lower side lobe level and narrower main lobe width, so as to concentrate the limited interference power in the direction of the main lobe as much as possible, thereby improving the effective utilization of interference power and ensuring Overall benefit of interference

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