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Airship radar conformal thinned array antenna and its signal processing method

A sparse array and radar technology, which is applied in the field of radar antenna technology and radar system, can solve the problems of synthetic aperture radar difficulty, slow hovering and cruising speed, etc., and achieve the goal of improving real aperture imaging resolution, easy implementation, and reducing volume and weight Effect

Active Publication Date: 2014-03-26
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

Because the airship has the characteristics of slow hovering and cruising speed, it is difficult to use the principle of synthetic aperture radar to realize ground imaging, and its high-resolution ground imaging problem needs to be solved urgently

Method used

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  • Airship radar conformal thinned array antenna and its signal processing method
  • Airship radar conformal thinned array antenna and its signal processing method
  • Airship radar conformal thinned array antenna and its signal processing method

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0040] The invention discloses a boat-borne radar system, which comprises: an airship platform and a boat-borne radar conformal sparse array antenna arranged on the airship platform, and the sparse array antenna is in common with the hull of the airship Shaped array.

[0041] Wherein, the boat-borne radar conformal sparse array antenna includes: a plurality of sub-arrays sparsely arranged on the boat body, the sub-arrays adopt active phased sub-arrays, and adopt a rigid structure to ensure the control accuracy of the sub-arrays; The receiving / transmitting component of the sub-array is a tile-type Tile structure with three-dimensional integration of radiating array elements, and each sub-array transmits and receives freque...

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Abstract

The invention discloses an airship radar conformal thinned array antenna and its signal processing method. The conformal thinned array antenna comprises a plurality of sparsely-distributed subarrays on a ship body. The subarrays adopt active phase control subarrays, and a rigid structure is adopted to guarantee subarray face control precision. A receiving / transmitting assembly of the subarrays is a stereoscopic integrated tile structure with radiation array elements. Each subarray transmits and receives frequency division or code division orthogonal signals so as to realize a full-array transmit-receive function. Observation scope of the conformal thinned array antenna is determined by subarray antenna beamwidth. High spatial resolution is realized by full-array antenna. The airship radar with the conformal thinned array antenna is used for high-resolution ground imaging and moving object detection.

Description

technical field [0001] The invention relates to the field of radar antenna technology and radar systems, in particular to the realization of a shipborne radar conformal sparse array antenna and its signal processing method. Background technique [0002] The airship has a large space and long endurance, and the shipboard radar system based on it can realize all-weather, long-term stable ground imaging and moving target detection. [0003] Synthetic aperture radar is to use the spatial virtual aperture generated by radar motion to synthesize an equivalent large aperture antenna to achieve higher spatial resolution. The characteristics of the airship’s suspension and residence make it difficult to use the principle of synthetic aperture radar to achieve ground imaging, but its huge size (such as the American HAA airship is 152.4 meters long and 48.7 meters in diameter) (see: http: / / www.globalsecurity .org / intell / system / haa.htm), which also provides the possibility to use large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q1/28H01Q1/36G01S7/02
Inventor 李道京李烈辰滕秀敏
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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