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Broadband signal receive method, device and electronic warfare receiver

A receiving method and technology for wideband signals, applied in the field of microwave photonics, can solve the problems of huge resource cost, difficulty in ensuring large bandwidth and high-precision signal reception at the same time, and achieve the effect of high-precision reception

Active Publication Date: 2019-01-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current existing RF signal receiving system architecture is difficult to ensure large bandwidth and high-precision signal reception at the same time, or it needs to be based on huge resource costs

Method used

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  • Broadband signal receive method, device and electronic warfare receiver
  • Broadband signal receive method, device and electronic warfare receiver
  • Broadband signal receive method, device and electronic warfare receiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Figure 13 shows based on Figure 12 A specific embodiment of the wideband signal receiving device of the present invention with the architecture shown.

[0062] In this embodiment, the light source module is composed of a mode-locked laser, a comb tooth selection module, an optical carrier frequency shift module, and an electro-optic modulator, and the photonic Fourier transform module is composed of a positive dispersion fiber, an electro-optic modulator, and an anti-dispersion fiber connected in sequence. The time domain analysis module consists of a photodetector and an electrical ADC. The photon-assisted high-precision receiving module is composed of an electro-optical modulator, a 90° optocoupler, a microring light processor array, a balanced photodetector, a 90° electric bridge, an electric filter and a digital signal processing module.

[0063] In the first part of the light source module, the mode-locked laser generates an optical signal, which is expressed i...

Embodiment 2

[0074] Figure 14 shows based on Figure 12 Another specific embodiment of the wideband signal receiving device of the present invention with the architecture shown.

[0075] In this embodiment, the light source module is composed of a single-wavelength laser; the photonic Fourier transform module is composed of an intensity modulator, a phase modulator, a parabolic signal generator and a dispersive optical fiber, and the received broadband radio frequency signal is connected to the microwave input of the intensity modulator end, the output end of the parabolic signal generator and the output end of the intensity modulator are respectively connected to the microwave input end of the phase modulator and the optical carrier input end, and the output end of the phase modulator is connected to the dispersion fiber; the time domain analysis module consists of a photodetector , electrical ADC; the photon-assisted high-precision receiving module is composed of a 90° optical coupler,...

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Abstract

The invention discloses a broadband signal receiving method. The method of the invention performs Fourier transform based on photonic technology on the received broadband radio frequency signal and performs time domain analysis on the converted signal to obtain time domain delay information of the broadband radio frequency signal. At that same time, photon-assisted high-resolution reception is carry out on the broadband radio frequency signal, and parameters of the photon-assisted high-resolution reception are real-time control according to the time-domain delay information, thereby realizinghigh-precision full-coverage reception of the radio frequency signal in the broadband range. The invention also discloses a broadband signal receiving device and an electronic warfare receiver. The invention can realize the real-time, reconfigurable and high-precision reception of the multi-frequency band broadband coverage signal, and avoids the excessive resource cost required for the full-bandcoverage and high-resolution fine reception.

Description

technical field [0001] The invention relates to a radio frequency signal receiving method, in particular to a broadband signal high-precision receiving method, belonging to the field of microwave photon technology. Background technique [0002] The electronic warfare system needs to realize the full-coverage reception of radio frequency signals with a wide spectrum and wide space covering the entire frequency band of the work and a large dynamic range, which poses a huge challenge to the current receiver system. In the field of electronic warfare, it is of great significance to effectively receive signals. In addition to the ability of high precision, high sensitivity, and large dynamic range, modern electronic receivers must also have large instantaneous bandwidth and the ability to process the monitored signals in real time. [0003] Common receivers can be divided into four categories: wideband receivers, narrowband receivers, multi-signal receivers, channelized and digi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/60
CPCH04B10/60
Inventor 朱丹张博文潘时龙陈文娟周涛钟欣陈智宇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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