Conformal sparse array antenna for shipborne radar and signal processing method thereof

A sparse array and array antenna technology, which is applied in the field of radar antenna technology and radar systems, can solve problems such as slow hovering and cruising speeds, difficulties in synthetic aperture radar, etc., to achieve easy implementation, improve real aperture imaging resolution, and reduce volume and weight Effect
CN103682677BActive Publication Date: 2016-07-13INST OF ELECTRONICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF ELECTRONICS CHINESE ACAD OF SCI
Publication Date
2016-07-13

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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.
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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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