Terahertz multi-mode real-time imaging system

A real-time imaging system and terahertz technology, applied in the field of terahertz imaging, can solve the problems of limited observation angle and field of view, inability to look forward to imaging, and inability to remain relatively still.

Active Publication Date: 2019-04-19
BEIJING RES INST OF TELEMETRY +1
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Problems solved by technology

The first way is to use the focal plane imaging architecture to achieve real-time staring imaging, but the phase information of the target cannot be obtained
The second imaging method is to use synthetic aperture radar imaging architecture to achieve coherent detection, but it has the following disadvantages: (1) poor real-time performance; (2) it must rely on the relative moving imaging of the system and the target, and cannot keep relatively still; (3) ) is unable to look forward to imaging, and the observation angle and field of view are limited
[0009] Third, the system architecture of the existing terahertz imaging system is not flexible, and it does not have the equipment potential of standardization and pedigree

Method used

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Embodiment Construction

[0034] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0035] This embodiment provides a terahertz multi-mode real-time imaging microsystem, the system includes a terahertz quasi-light feed-in module 1, a terahert...

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Abstract

The invention discloses a terahertz multi-mode real-time imaging system which comprises a terahertz quasi-optical feed-in module, a terahertz planar imaging array frontend module, an intermediate-frequency readout circuit, a signal processing and control module, a display module, a baseband signal generating module, a terahertz transmitting signal and a local oscillator signal module. The system can operate in four working modes of passive non-coherent, passive coherent, active non-coherent and active coherent, and can satisfy application requirements such as all-weather mute supervision, suspected key target imaging and tracking. Furthermore the system can improve image contrast on the condition of imaging quality reduction caused by environment factors. The system is suitable for aerospace situation perception and aerospace target imaging tracking.

Description

technical field [0001] The invention belongs to the technical field of terahertz imaging, in particular to a terahertz real-time imaging system. Background technique [0002] Terahertz (THz) waves usually refer to electromagnetic radiation (1THz=10 12 Hz), between microwaves and infrared radiation on the electromagnetic spectrum. Terahertz waves have very important application value in space situational awareness and space target monitoring and tracking. [0003] From the perspective of propagation characteristics, the propagation attenuation of terahertz waves in high altitude, near space and outer space is very small, which is much lower than that in near-ground space. Therefore, terahertz waves can be used to realize long-distance target detection and tracking in the above-mentioned spaces . [0004] Secondly, from the perspective of target characteristics, the shape and shadow (contour) characteristics of targets in the terahertz frequency band are clearer than those ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89G01S7/481
CPCG01S7/4811G01S17/89G01S13/89G01N21/3581
Inventor 牟进超许戎戎刘昊刘峰孙兆阳刘强
Owner BEIJING RES INST OF TELEMETRY
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