SOCP based broadband transmission DBF interference design method

Abstract

The invention discloses an SOCP (Second Order Conic Programming) based broadband transmission DBF (Digital Beam Formation) interference design method. The principle though of the method is as follows:determining a uniform linear array including M array elements and broadband digital signals, branching the broadband digital signals to obtain M channels of broadband digital signals; obtaining M FIRs (Filter Impulse Responses); performing FIR filtering on each channel of the broadband digital signals through a corresponding FIR to obtain M channels of broadband digital signals subjected to FIR filtering; performing digital-to-analog conversion, up-conversion, RF filtering and amplification on each channel of broadband digital signals subjected to FIR filtering, and obtaining M channels of broadband signals subjected to amplitude and phase processing; obtaining broadband interference beams after transmitting each channel of broadband signals subjected to amplitude and phase processing tothe air through corresponding array elements, the broadband interference beams being a SOCP based broadband transmission DBF interference design result.

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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