High-frequency broadband frequency hopping signal generation device and method based on photon technology

Abstract

The invention provides a high-frequency broadband frequency hopping signal generation device based on a photon technology. The device comprises a laser, a low-frequency frequency hopping signal, a dual-polarization quadrature phase shift keying modulator DPQPSKM, a polarization controller, an optical circulator, a polarization beam splitter, a radio frequency local oscillator signal, an optical frequency shift module, an analyzer and a photoelectric detector. An optical modulator is used for carrying out electro-optical modulation on optical carriers and low-frequency frequency hopping signals output by a laser source to generate two paths of polarized orthogonal dual-wavelength optical signals, interference occurs after the two paths of polarized orthogonal dual-wavelength optical signals pass through a polarization controller, two paths of polarized orthogonal single-frequency optical signals are obtained, the two paths of polarized orthogonal single-frequency optical signals enter a Sagnac ring structure in the clockwise/anticlockwise transmission direction respectively, and single-frequency optical signal of the forward input optical frequency shift module is modulated to generate frequency shift; and the signals are polarized and combined by a polarization analyzer and then enter a detector for beat frequency, so that frequency multiplication and up-conversion operations on the low-frequency frequency hopping signals are realized. According to the invention, the working frequency band of the low-frequency frequency hopping signal is improved to a high-frequency domain by using an optical means, the working bandwidth is multiplied, the system control is flexible, and the tuning range is large.

Description

technical field [0001] The invention belongs to the technical field of microwave photon signal generation, and in particular relates to a photon technology-based high-frequency broadband frequency-hopping signal generation device and method thereof. Background technique [0002] Microwave frequency hopping signals are widely used in wireless communication, radar detection, electronic warfare and other fields. With the advancement of technology, the requirements for microwave frequency hopping signals in these application scenarios are increasingly expanding in the direction of high-frequency domain and large bandwidth. High-frequency broadband frequency-hopping signals can effectively increase communication transmission capacity, improve radar detection accuracy, improve anti-jamming capabilities and reduce the probability of being intercepted in electronic countermeasures. However, due to the existence of electronic bottlenecks, the frequency-hopping signal bandwidth (~100...

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Problems solved by technology

[0004] However, the above schemes have certain limitations: Scheme (1) can only generate 2-order frequency hopping signals, and to generate multi-order frequency hopping signals, it is necessary to perform cascading / serial link structure, which leads to complex systems and performance degradation; scheme ( 2) The signal modulation rate, frequency hopping rate, and bandwidth of scheme (3) are limited by direct modulation lasers or tunable filters, and the stability is easily affected by the environment; in scheme (4), there are many devices that implement frequency-time mapping It has the disadvantages of large volume, poor tuning performance, and difficult operation.

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