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Broadband signal processing method and system

A processing method and technology for wideband signals, which are applied in the field of communication and can solve problems such as difficult implementation and limited electronic system bandwidth.

Active Publication Date: 2019-03-08
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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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 a system. The method comprises the steps of: a, carrying out frequency-spectrum / wavelength mapping on a linear broad-spectrum chirp light pulse and a to-be-processed signal; b, completing a time-domain-frequency mapping on the signal, which is processed in the step a, through a dispersive medium B; c, transmitting the signal, which is processed in the step b, to a reflective blazed grating to spread the same spatially according to respective frequency / wavelength components; d, placing an imaging screen on a reflective path of thereflective blazed grating, and receiving a signal from reflection of the reflective blazed grating to generate a spatial intensity distribution pattern; e, placing the imaging screen on a front focalplane of a Fourier lens, and completing real-time Fourier transform on the spatial intensity distribution pattern through the Fourier lens; and f, carrying out sampling on a spatial intensity distribution pattern after completion of Fourier transform through multiplex optical fiber disposed in a back focal plane of the Fourier lens. The broadband signal high-precision frequency-spectrum analysisprocessing method and the system of the invention are obtained by parallel outputting a Fourier transform result for organic fusion with a high-precision electricity processing system

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 Applications(China)
IPC IPC(8): H04B10/2513H04B10/548
CPCH04B10/2513H04B10/25137H04B10/548
Inventor 江阳訾月姣
Owner GUIZHOU UNIV
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