Sub-array base-based L-shaped sub-array formation method

Abstract

The present invention discloses a sub-array base-based L-shaped sub-array formation method. The method comprises the steps of selecting four eight-unit L-shaped sub-arrays, and splicing into different 4*8 first rectangular sub-arrays; selecting six eight-unit L-shaped sub-arrays, and splicing into different 6*8 second rectangular sub-arrays; selecting eight eight-unit L-shaped sub-arrays, and splicing into different 8*8 third rectangular sub-arrays; selecting 10 eight-unit L-shaped sub-arrays, and splicing into different 8*10 fourth rectangular sub-arrays; using the first rectangular sub-arrays, the second rectangular sub-arrays, the third rectangular sub-arrays and the fourth rectangular sub-arrays to establish a sub-array base; selecting the appropriate rectangular sub-arrays from the sub-array base randomly to splice into a target antenna array; ending splicing until the antenna pattern performance accords with the index requirements, otherwise reselecting. According to the present invention, the rectangular sub-arrays have the regular boundaries, the fitting degree between the modules is good, the arrangement randomness is strong, the number of the active channels of a phased array spliced and formed by the method is one-eighth of a full array, the sparsification degrees of the active channels are high, and the system cost can be saved effectively.

Description

technical field [0001] The invention relates to an array antenna technology, in particular to a method for forming an L-shaped sub-array based on a sub-array library. Background technique [0002] Since the application of active phased array antennas, modern radar technology has developed rapidly, and radar, as an important task for space surveillance and detection, and combat plan issuance, has received more and more attention. With the continuous improvement of system performance requirements such as radar resolution and power, active phased array antennas are developing towards electrically large sizes. The larger the antenna array, the greater the amount of equipment contained in the antenna array, and the cost will increase exponentially. Although with the development of science and technology and technological progress, the cost of active phased array antennas has dropped significantly, but it is still daunting. Huge equipment and power consumption are still a constra...

AI Technical Summary

Problems solved by technology

This method can sparse the number of active channels in a large proportion and effectively suppress the grating lobes of the pattern, but the design is difficult, the gain of the antenna array is low, and the shape of the sparse antenna array is different, which is difficult to process, assemble, and locate

Irregular arrays disrupt the periodic arrangement of antenna elements in the antenna array to achieve sparse active channels and suppress scanning grating lobes. However, it is difficult to form irregular sub-arrays. For large array designs, it is impossible to complete the array manually. , it is not easy to realize in engineering

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