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A mixed-mode imaging device and method

A hybrid mode and imaging device technology, which is applied in measuring devices, radio wave reflection/re-radiation, and re-radiation, can solve the problem of limited azimuth resolution of coherent radar imaging systems and inability of incoherent imaging systems to locate targets , low signal efficiency and other issues, to improve the quality of radar imaging, achieve super-resolution imaging, and have the effect of anti-jamming

Inactive Publication Date: 2018-08-10
XI AN JIAOTONG UNIV
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Problems solved by technology

[0005] The azimuth resolution of the coherent radar imaging system is limited by the antenna aperture (real aperture or synthetic aperture), and the use efficiency of repeated measurement signals is very low; the incoherent imaging system itself cannot perform target positioning and can only rely on auxiliary equipment, which is expensive And the error is not easy to control

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  • A mixed-mode imaging device and method

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Embodiment Construction

[0045]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] like figure 1 As shown, an embodiment of the present invention provides a mixed-mode imaging device, including:

[0047] Transmitter 1 and receiver 2, and transmitter 1 and receiver 2 are connected through a physical interface;

[0048] The transmitter 1 includes a modulation module 11, a first signal processing module 12 and a transmitting module 13; the modulation module 11, the first signal processing module 12 is connected to the transmi...

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Abstract

The invention discloses a mixing mode imaging device and a mixing mode imaging method. The imaging device comprises a transmitter and a receiver, which are connected together by a physical interface. The transmitter comprises a modulation module, a first signal processing module, and a transmitting module. The receiver comprises a receiving module, a second signal processing module, a target positioning and coherent imaging module, and a mixing imaging module. The mixing imaging module is used to estimate a target characteristic parameter according to an incoherent transmitting signal, an incoherent receiving signal, a target positioning signal acquired by the target positioning and coherent imaging module, and an environmental parameter output by the second signal processing module, and is used to complete target imaging by combining with a coherent imaging result and adopting a fusion processing method. Advantages of a coherent radar imaging system and an incoherent radar imaging system are kept at the same time, and the imaging system is provided with a target positioning function, and imaging resolution is capable of breaking through a limitation of a radar aperture.

Description

technical field [0001] The invention relates to the field of radar imaging, in particular to a mixed-mode imaging device and method. Background technique [0002] Existing radar imaging technologies are all based on coherent imaging mode or incoherent imaging mode. Under the coherent imaging mechanism, the transmitter emits coherent signals to illuminate the target, and a single or multiple coherent receivers are used to receive target echo signals, and then use the transmitted signals and The relationship between target echo signals is used to locate and image the target. Coherent mode radar imaging systems include real aperture radar imaging systems, synthetic aperture radar imaging systems and focal plane radar imaging systems. The coherent mode radar imaging system can directly measure the distance of the target. The distance measurement accuracy depends on the overall bandwidth of the coherent system, while the azimuth resolution of the coherent mode radar imaging syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 朱士涛董晓丽贺雨晨张明施宏宇张安学徐卓
Owner XI AN JIAOTONG UNIV
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