Method for independently achieving target IFF identification by secondary radar

Abstract

The invention provides a method for independently achieving target IFF identification by a secondary radar, and aims to provide a method which does not depend on primary radar guidance and can rapidly, accurately and reliably identify a target. According to the technical scheme, a secondary radar integrated interrogator system performs alternate scanning in a fixed repetitive sequence SSR interrogation working mode, an interrogator receives and decodes an airplane response signal, target track data is sent to a radar display and control terminal, and a target needing IFF identification is selected; when secondary radar scanning inquiry work is carried out, whether an IFF target is identified by friends or foes exists in the current pointing direction or not is judged; an IFF query is sentfor multiple times according to a mode specified by the display control terminal, IFF response receiving processing is performed, and then switching is performed back to the A/C mode SSR autonomous query; and the radar display and control terminal matches the identification result with a secondary radar track, fuses the identification information into a target track label and a list, and updates the track label and the list to complete an IFF identification process.

Description

technical field [0001] The invention relates to a method suitable for secondary radar to independently realize the target IFF identification of the western system. It belongs to the secondary radar extended application technology in the identification friend or foe system of the western system. Specifically, it is about the identification method of using the secondary radar's autonomous air surveillance capability. Background technique [0002] The IFF IFF system of the western system has evolved from the initial basic mode M1 / 2 / 3 / C to the current encrypted mode M4 / 5. The encryption mode M5 is a newly added mode of the active identification friend or foe system MarkXIIA. It has the encryption protection of modern encryption computers and is not easy to be deciphered or forged. It can be applied to air-to-air, air-to-sea, ground-to-air and other environments. Certain research value. The IFF uses the working principle of the secondary radar, adopts the inquiry-response worki...

AI Technical Summary

Problems solved by technology

However, there are many defects in the IFF device: for example, it is difficult to penetrate wind and rain, sandstorms, and gunpowder smoke; in a rapidly changing environment, it is difficult to distinguish between intertwined and approaching targets; especially at night, it is difficult to deal with various vehicles mixed together. scene

Since the primary radar transmitter is a high-power and easy-to-wear part, it generally takes less time to start up and work, which brings inconvenience to the task of identifying friend or foe

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