A broadband signal processing method and system

A processing method and broadband signal technology, applied in the field of communication, can solve problems such as difficult to realize and limited bandwidth of electronic systems

Active Publication Date: 2021-06-15
GUIZHOU UNIV
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Problems solved by technology

Limited by the bandwidth of the electronic system, this requirement is often difficult to achieve
[0003] The time-frequency analysis technology of existing signals mainly relies on electronic technology. Although electronic technology has shown strong advantages and capabilities in terms of precision and subsequent signal processing combined with computers in small bandwidth signal processing, only existing electronic technology It is obviously quite difficult and challenging to completely realize the efficient time-frequency analysis and processing of broadband signals by technical means

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  • A broadband signal processing method and system
  • A broadband signal processing method and system

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Embodiment 1

[0033] Example 1. A broadband signal processing method, comprising the steps of:

[0034] a. Time-frequency mapping of the signal to be processed and the wide-spectrum linear chirped optical pulse;

[0035] b. After the time-frequency mapped signal passes through the dispersive medium B, the time-intensity information carried on each frequency shrinks in the time domain, and completes the arrangement in time sequence, that is, completes the time domain-frequency mapping and compression of the signal;

[0036] c. Send the time-domain-frequency mapping and compressed signal to the reflective blazed grating, so that it can be spread out in space according to the respective frequency components;

[0037] d. An imaging screen is placed on the reflection path of the reflective blazed grating, and after receiving the signal reflected from the reflective blazed grating, a spatial intensity distribution pattern corresponding to the intensity change of the time domain signal appears on...

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Abstract

The invention discloses a broadband signal processing method and system. The steps are: a. performing spectrum / wavelength mapping on the wide-spectrum linear chirped optical pulse and the signal to be processed; b. passing the signal processed in step a through dispersive medium B to complete time domain-frequency mapping; c. processing the signal in step b The signal is sent to the reflective blazed grating, so that it spreads in space according to its respective frequency / wavelength components; d. Place an imaging screen on the reflection path of the reflective blazed grating, and receive the signal reflected from the reflective blazed grating to generate a spatial intensity distribution pattern E. The imaging screen is placed on the front focal plane of the Fourier lens, and the spatial intensity distribution pattern completes the real-time Fourier transform through the Fourier lens; f. The spatial intensity distribution pattern after the Fourier transform is completed by being set in The multi-pass fiber is sampled in the focal plane of the leaf lens. The invention organically integrates the parallel output of Fourier transform results with a high-precision electrical processing system to obtain a high-precision frequency spectrum analysis and processing method and system for broadband signals.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a broadband signal processing method and system. Background technique [0002] Real-time high-precision digital processing of broadband signals has important demands in radar, communication and other fields. Limited by the bandwidth of the electronic system, this requirement is often difficult to realize. [0003] The time-frequency analysis technology of existing signals mainly relies on electronic technology. Although electronic technology has shown strong advantages and capabilities in terms of precision and subsequent signal processing combined with computers in small bandwidth signal processing, only existing electronic technology It is obviously quite difficult and challenging to completely realize the efficient time-frequency analysis and processing of broadband signals by technical means. [0004] Light waves have the characteristics of large bandwidth and good pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2513H04B10/548
CPCH04B10/2513H04B10/25137H04B10/548
Inventor 江阳訾月姣
Owner GUIZHOU UNIV
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