Microwave signal transmitting-receiving system, method and imaging system for MIMO-SAR imaging

A technology of MIMO-SAR and microwave signals, which is applied in radio wave measurement systems, using re-radiation, radio wave reflection/re-radiation, etc., can solve problems such as unfavorable high-resolution imaging observations, and achieve improved observation range and safety performance and improve the observation accuracy

Active Publication Date: 2015-01-07
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology

Therefore, it is not conducive to high-resolution imaging observations around airborne platforms

Method used

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  • Microwave signal transmitting-receiving system, method and imaging system for MIMO-SAR imaging
  • Microwave signal transmitting-receiving system, method and imaging system for MIMO-SAR imaging
  • Microwave signal transmitting-receiving system, method and imaging system for MIMO-SAR imaging

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0031] figure 1 It shows an example platform where the arc array antenna for MIMO-SAR imaging and the microwave signal transceiving system for MIMO-SAR imaging provided by the present invention are applied. Such as figure 1 As shown, the arc array antenna 1 and the microwave signal transceiving system can be loaded on the aircraft platform 22 and move with the aircraft platform 22 . The microwave signal transceiving system can radiate microwave signals through the arc array antenna 1 , the microwave signal is reflected by the observation scene 21 to form an echo signal, and then the echo signal is received through the arc array antenna 1 . Afterwards, the ech...

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Abstract

The invention discloses a microwave signal transmitting-receiving system, method and imaging system for MIMO-SAR imaging. The transmitting-receiving system comprises an MIMO transmitting-receiving module used for generating and transmitting microwave signals, an arc array antenna and a microwave switching network, wherein the arc array antenna comprises an arc transmitting array antenna body and an arc receiving array antenna body, and the microwave switching network receives the microwave signals from the MIMO transmitting-receiving module, selects independent transmitting antenna array elements going to radiate the microwave signals from the arc transmitting array antenna body, and transmits the microwave signals to the selected independent transmitting antenna array elements. The microwave switching network further selects independent receiving antenna array elements going to receive echo signals from the arc receiving array antenna body, receives the echo signals from the selected independent receiving antenna array elements, and transmits the echo signals to the MIMO transmitting-receiving module. The MIMO transmitting-receiving module further receives the echo signals, and processes the echo signals so that digital echo signals can be formed. Accordingly, imaging observation in a large field range can be achieved.

Description

technical field [0001] The present invention relates to the field of microwave imaging, in particular to a microwave signal transceiving system, method and imaging system for MIMO-SAR (Multiple-Input Multiple-Output-Synthetic Aperture Radar) imaging. Background technique [0002] Traditional visual, optical or infrared measures are greatly affected by factors such as terrain, weather and day and night, and do not have the ability to work around the clock. The airborne array antenna forward-looking imaging system can not only penetrate smoke, fog, clouds and floating dust, etc., and is not affected by weather and climate, but also can perform real-time high-resolution imaging of the area in front of and below the aircraft, and can provide information for aircraft landing, Reconnaissance, search and rescue and take-off provide real ground information and enhance the aircraft's navigation and transportation rescue capabilities. [0003] The existing airborne array antenna forw...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01S7/28
CPCG01S7/28G01S13/9011
Inventor 黄平平谭维贤洪文
Owner INNER MONGOLIA UNIV OF TECH
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