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Broadband microwave photon radar real-time receiving device based on cross correlation

A microwave photon, real-time receiving technology, applied to radio wave measurement systems, instruments, etc., can solve the problem of reduced pulse compression performance at edge positions

Active Publication Date: 2021-05-11
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pulse compression of the deskewing process needs to know the center position of the target, and can only perform imaging processing on the target within a certain range around the center position of the target. If the range is too large, the pulse compression performance at the edge position will be reduced.

Method used

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  • Broadband microwave photon radar real-time receiving device based on cross correlation
  • Broadband microwave photon radar real-time receiving device based on cross correlation
  • Broadband microwave photon radar real-time receiving device based on cross correlation

Examples

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Embodiment

[0028] The optical signal generating module 1 includes two parts: a system light source and an optical signal generating part. The system light source is used to generate a narrow pulse with a wide spectrum and a certain repetition frequency as a carrier. This embodiment uses a mode-locked laser; the optical signal generation part adopts a beat frequency method, and the generated signal is a chirp signal.

[0029] The microwave signal generation and emission module 3 includes a light emission detection module, a microwave amplification module and a microwave output module. In this embodiment, the light emission detection module adopts a PIN tube; the microwave amplification module adopts a class A and B complementary symmetrical power amplification circuit ; The microwave output module adopts a horn antenna.

[0030] The controllable light delay module 6-2 adopts a step adjustable light delay line, and the step adjustable interval is smaller than the distance resolution of the...

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Abstract

The invention provides a broadband microwave photon radar real-time receiving device based on cross-correlation. The device comprises an optical signal generation module, a microwave signal generation and emission module, a microwave amplification module, a microwave input module, a cross-correlation real-time receiving electro-optical module and a digital signal processing module. According to the invention, microwave signals are processed in the photon field, the advantages of high bandwidth and low noise are achieved, and high-frequency-band and large-bandwidth microwave signals can be processed; and the broadband microwave photon radar real-time receiving device can be widely applied to the information technology fields of ultra-wideband radar, digital communication, electronic countermeasure and the like.

Description

technical field [0001] The invention relates to broadband radar, in particular to a real-time receiving device for broadband microwave photon radar based on cross-correlation. Background technique [0002] A device that uses electromagnetic waves to detect targets and receive echoes for processing. Radar plays an irreplaceable role in the fields of communication, transportation, and national defense. Since it was first put into use in 1935, radar has developed rapidly in recent decades, and its functions have become more and more abundant. From the early ranging, positioning, and speed measurement functions to search, identification, tracking, and imaging, modern radar systems already have many Function, multi-band and digital development trend, but also put forward higher requirements for wideband, miniaturization and reconfigurable radar performance. [0003] Radar based on microwave, semiconductor and digital integrated circuit technology is limited by electronic bottlen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/4865G01S7/4861
CPCG01S7/4865G01S7/4861
Inventor 李杏郭航邓晓邹卫文
Owner SHANGHAI JIAO TONG UNIV
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