Distributed mimo radar jamming waveform design method based on radio frequency stealth

Abstract

The invention discloses a method for designing interference waveforms of distributed MIMO radars based on radio frequency stealth. First, in the case of electronic countermeasures between the airborne electronic interference system and the distributed MIMO radar, according to prior knowledge, the target relative to the distributed MIMO The frequency response of the radar, the radar transmission signal and the receiver noise power spectrum; then, aiming at minimizing the total transmission power of the airborne electronic jamming system, a distributed MIMO radar jamming waveform design model based on radio frequency stealth is established, and the Lagrange The multiplier method is used to solve the model; through the iterative calculation of the dichotomy method, the jamming waveform with the minimum total transmission power of the airborne electronic jamming system is selected as the optimal solution, and the minimum total jamming power that meets the constraints can be obtained. The beneficial effect achieved by the present invention: the method not only ensures the interference performance of the distributed MIMO radar system, but also effectively improves the radio frequency stealth performance of the airborne electronic interference system.

Description

technical field [0001] The invention relates to a distributed MIMO radar interference waveform design method based on radio frequency stealth, and belongs to the technical field of radar interference waveform design. Background technique [0002] The distributed MIMO radar system is an organic whole composed of multiple transmitting antennas and multiple receiving antennas, which cooperate with each other and are closely related to each other. Functions such as identification and tracking, interference suppression, and fire guidance. Targets in the same field of view can be detected by multiple transmit and receive antennas. In order to prevent the distributed MIMO radar from detecting and tracking the target, it is not enough to only interfere with some radar receivers in the system. All radar receivers must be effectively jammed to cover the penetration target. However, the jamming resources of the airborne electronic jamming system are often limited. In order to achieve...

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Problems solved by technology

The existing research on active suppressive jamming mainly aims at maximizing the jamming effectiveness, but increasing the transmit power of the jamming system also increases the interception probability of the jamming signal by the passive detection system of the enemy, thus greatly reducing the jamming effect. The radio frequency stealth performance of the system

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