Forming method and system of radio frequency stealth transmitting beam based on four-dimensional antenna array

Abstract

The invention provides a forming method of a radio frequency stealth transmitting beam based on a four-dimensional antenna array. Only simple timing sequence design is needed to achieve similar multiple input multiple output MIMO and phase controlled MIMO arrays and even better detection performance, a radar is different from a traditional radio frequency stealth radar, and good radio frequency stealth performance can be given to the radar due to pseudo-randomness of timing sequence. The invention further provides a forming system of the radio frequency stealth transmitting beam based on the four-dimensional antenna array based on the forming method. The forming system has the characteristics of being simple in structure, and easy to realize. According to the forming method and system of the radio frequency stealth transmitting beam based on the four-dimensional antenna array, the generation condition of four-dimensional antenna timing sequence is controlled, under the condition that aradiation signal with good radio frequency stealth performance is ensured, orthogonality among sub-arrays of transmitting antennas or different radio frequency switches is easily realized, a receiving end receives an echo and carries on the signal processing, and information of multiple targets can be simultaneously obtained.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and in particular relates to a radio frequency stealth transmitting beamforming method and system based on a four-dimensional antenna array. Background technique [0002] In 1959, Shanks and Bickmore of the Hughes Aircraft Company in the United States introduced the time dimension to the conventional antenna array with three-dimensional spatial changes, and proposed the concept of four-dimensional antenna array and time modulation for the first time. In 1963, American scholar Kummer and others proposed the concept of time-modulated antenna array: by periodically switching on and off the antenna excitation, the radiation aperture size of the antenna can be controlled in the "time" dimension. The time-modulated antenna array is a kind of four-dimensional antenna array. The four-dimensional antenna array uses radio frequency switches to control the working state of each unit according t...

AI Technical Summary

Problems solved by technology

Because this technology has made a compromise and balance between phased array radar and MIMO radar, it is called phased MIMO radar. There needs to be a certain degree of coherence between units, which will bring great challenges to the design and manufacture of transceiver components

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