A device for dynamically reconfigurable and differential beams of a light-controlled radar array

Abstract

The invention discloses a dynamically reconfigurable and difference beam device of a light-control radar array. The device is composed of an antenna array, a laser device, a first wavelength divisionmultiplexer, an electro-optic modulator, an optical fiber delay line, a sum and difference switch, a second wavelength division multiplexer and a photoelectric detector. In correspondence to a certaintarget beam signal, a beam receiving signal of the antenna array allocates a laser transmission path of the antenna array based on the wavelength; the sum and difference switch in a light-control subarray is used for generating two paths of completely software programmable difference beam signals; and the output beam of a random array antenna can be selected to generate a same-direction or opposite adding structure in the difference beam. Therefore, the dynamics and flexibility of the synthesis and difference beams are improved substantially; the space target navigation and control can be realized well; and the device is crucial to the full-airspace dynamic reconfigurable light-control beam-forming technology.

Description

technical field [0001] The invention belongs to the technical field of radar arrays, and in particular relates to a device for dynamically reconfigurable and differential beams of a light-controlled radar array. Background technique [0002] Array signal processing is an important branch in the field of signal processing, and its applications involve a variety of national economic and military applications such as radar, sonar, seismic surveying, and electronic medical engineering. Phased array radar is phase-controlled electronically scanned radar. The difference from traditional radar is that it uses a phased array antenna, which is composed of multiple antenna elements. By changing the amplitude and phase of the feed of each array element, the antenna beam can be realized. scan. The traditional phased array antenna uses an electronically controlled phase shifter to change the phase of each array element. When the instantaneous bandwidth of the signal is large, there will...

AI Technical Summary

Problems solved by technology

However, the traditional monopulse and difference beamers have a single structure, and it is difficult to generate corresponding sum and difference beam signals according to actual needs, which affects the flexibility of the array antenna system.

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