Active and passive radar seeker composite antenna

Abstract

The active and passive radar seeker composite antenna of the invention belongs to the antenna technology and relates to the improvement of the active and passive radar seeker composite antenna. It includes a waveguide slotted array monopulse antenna with high gain and low sidelobe working in the Ka band. Slit Array Monopulse Antenna A common-aperture parabolic four-horn monopulse antenna working in the X-band. The gain of the active and passive antennas of the invention is relatively high, which greatly increases the working distance.

Description

Active and passive radar seeker composite antenna technical field The invention belongs to the antenna technology and relates to the improvement of the compound antenna of the active and passive radar seeker. Background technique The active / passive composite guided air-to-air missile radar seeker has the characteristics of long operating distance, large field of view angle range, strong anti-radar shutdown ability and anti-decoy interference ability. Therefore, in future air combat, under complex electromagnetic environment conditions , it is one of the killer weapons to defeat the enemy. The active and passive radar seeker composite antenna introduced in domestic literature uses a double-armed helical antenna (Archimedes helical antenna or equiangular helical antenna) as a one-dimensional single-plane passive (passive) detection system, and the active radar tracking antenna uses a circular Aperture parabolic antenna (or cut parabolic antenna). This design scheme, becaus...

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Problems solved by technology

This design scheme, because the two helical antennas need to be symmetrically embedded in the parabolic main reflector of the active radar tracking antenna (usually inscribed with the outer circle) in terms of structure, its disadvantages are: the gain of the active and passive antennas is relatively low, close range

Due to the small aperture of the passive antenna, its gain is low; at the same time, due to the shielding of the active antenna by the passive antenna, the gain of the active antenna is reduced, resulting in a decrease in detection accuracy

No relevant foreign literature was retrieved

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