Modular and building block type digital array radar system

Abstract

The present invention provides a modular and building block type digital array radar system. The system comprises a plurality of building block type digital active transceiver sub-modules and a data fusion server. The building block type digital active transceiver sub-modules are respectively mounted on a preset antenna array-plane framework and are respectively connected with the data fusion server. Each building block type digital active transceiver sub-module is composed of an antenna radiation module in card-inserting type connection with a comprehensive backboard, a digital T / R module, a digital beam forming unit, an optical power divider and an array-plane monitoring network module, wherein the antenna radiation module, the digital T / R module, the digital beam forming unit and the optical power splitter are sequentially in communication connection. The optical power splitter is connected with the data fusion server. The array-plane monitoring network module is respectively connected with the digital T / R module and the data fusion server. The modular and building block type digital array radar system has the advantage of multi-angle viewing angle and can effectively resist the main-lobe interference. A distributed arrangement receiving station is passive and can effectively reduce the radar intercepted probability and the radar attacked probability.

Description

technical field [0001] The invention relates to the technical field of digital array radar, in particular to a modular and building block digital array radar system. Background technique [0002] Radar is faced with the challenge of stealth targets and complex electromagnetic environments, and the survivability of traditional monostatic radars is severely challenged. [0003] Stealth targets are mainly designed for active radars in the centimeter wave band, which greatly reduces the RCS of ±45° horizontally and ±30° vertically in the direction of the nose cone that is vulnerable to attack. Anti-stealth detection equipment such as passive positioning system has come out one after another. These devices have good anti-stealth performance under certain conditions, but their anti-stealth performance is poor for silent penetration, active jamming, etc., and there are certain deficiencies in accuracy, low-altitude detection, and volume. [0004] Radar needs to work in a complex ...

AI Technical Summary

Problems solved by technology

These devices have good anti-stealth performance under certain conditions, but their anti-stealth performance is poor for silent penetration, active jamming, etc., and there are certain deficiencies in accuracy, low-altitude detection, and volume.

[0004] Radar needs to work in a complex electromagnetic interference environment. Existing anti-jamming technologies such as sidelobe cancellation and sidelobe concealment are mostly aimed at sidelobe interference, and eliminate the interference effect by forming a notch on the sidelobe. The disadvantage is that in the case of main lobe interference, it will cause distortion of the pattern and cannot solve the problem of main lobe interference

[0005] In addition, the traditional radar transceiver is integrated, which is easy to expose itself, thus greatly increasing the probability of being tracked and attacked, and the survival of radar is seriously threatened

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