Broadband microwave photon phase coded signal generation device and method

Abstract

The invention provides a broadband microwave photon phase coded signal generation device and method. An output port of a laser is connected with an input port of a carrier modulation module, an outputport of the carrier modulation module is connected with an input port of a phase encoding modulation module, an output port of the phase encoding modulation module is connected with an optical inputport of a photoelectric detector after passing through the optical fiber, and the photoelectric detector outputs a required phase encoding signal. According to the invention, an integrated polarization multiplexing modulator is used to generate an optical carrier signal, and then the polarization modulator is used to carry out phase coding modulation on the generated carrier signal so as to generate a phase coding signal without baseband interference. The amplitude of the signal is tuned by controlling the DC bias voltage of the polarization multiplexing modulator, so the system provided by the invention is expanded to a phased array radar system and a frequency-controlled array radar system, has a wider application scene, and is of great significance to the fusion and development of next-generation military and civil radar systems.

Description

technical field [0001] The invention relates to the field of optoelectronics, in particular to a signal generating device and a realization method. Background technique [0002] As detection targets and electromagnetic interference become more and more complex, future radar systems are constantly developing in the direction of large bandwidth, multi-band, multi-function, anti-jamming, and portability. Especially under the requirements of modern warfare that integrates air, sea and land, the radar system is facing a severe test. The targets that need to be detected and interfered are becoming more and more complex. locking. How to break through the limitations of existing electronic bottlenecks and realize a radar system with large bandwidth, reconfigurability, and flexible waveform is the frontier and hot spot of modern radar system research. Microwave photon radar utilizes the large bandwidth and anti-electromagnetic interference characteristics of photon technology, whic...

AI Technical Summary

Problems solved by technology

[0003] The radar phase encoding technology based on microwave photon technology that has been reported so far can generate pulse compression phase encoding signals with larger bandwidth and frequency, but there is often baseband modulation interference (background noise), which deteriorates the signal-to-noise ratio of the transmitted signal and affects the radar. detection precision and accuracy

In addition, the existing technology often only considers the generation of pulse-compressed phase-encoded signals, and does not consider the amplitude weighting coefficients of multiple transmitted signals.

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