Angular Resolution Enhancement of the Multi-Input Multi-Output Radar by Using the 2D Nested Array Method

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Dehghani Rasoul; Aghajani Rouhollah

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Journal: Journal of Intelligent Procedures in Electrical Technology Year:2020 | Volume:11 | Issue:43 Page(s): 1-12

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Title

Angular Resolution Enhancement of the Multi-Input Multi-Output Radar by Using the 2D Nested Array Method

Author(s)

Dehghani Rasoul | Aghajani Rouhollah | Issue Writer Certificate

Keywords

MIMO radarQ1

virtual arrayQ1

nested arrayQ1

resolution enhancementQ1

Abstract

In conventional phased array systems, increasing the array length and consequently increasing the number of antenna elements are needed to improve spatial resolution. It can be addressed by MIMO radars using orthogonal signals from multiple transmitters and using the virtual array. Virtual element's locations are derived from the convolution of the physical element's location of the transmitter and receiver. To understand the functionality of MIMO radars, virtual array has been introduced. As the virtual array be larger, the radar angle resolution increase. Increasing the degree of freedom of the virtual array is highly dependent on the array of transmitter and receiver elements placement. The nested array which is one of the well-known methods in alignment of MIMO radar array elements, is investigated. In this article, the new nested array is examined and implemented in one dimension. The very innovative idea of this article is to use the new 2D nested array. A multi-step approach for implementing two-dimensional arrays using a new nested array for a MIMO radar is presented which can be generalized to any other structure with different number of elements. Finally, the advantages of the proposed method in terms of angular beam width of the main radar are presented. The results show that the proposed method is much more efficient than the other methods. The comparative results presented at the end of this article shows that the half-power beam width of the proposed method is approximately 0. 3 degrees while this value for the nested method is more than 2 degrees.

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APA: Copy

Dehghani, Rasoul, & Aghajani, Rouhollah. (2020). Angular Resolution Enhancement of the Multi-Input Multi-Output Radar by Using the 2D Nested Array Method. JOURNAL OF INTELLIGENT PROCEDURES IN ELECTRICAL TECHNOLOGY, 11(43 ), 1-12. SID. https://sid.ir/paper/403692/en

Vancouver: Copy

Dehghani Rasoul, Aghajani Rouhollah. Angular Resolution Enhancement of the Multi-Input Multi-Output Radar by Using the 2D Nested Array Method. JOURNAL OF INTELLIGENT PROCEDURES IN ELECTRICAL TECHNOLOGY[Internet]. 2020;11(43 ):1-12. Available from: https://sid.ir/paper/403692/en

IEEE: Copy

Rasoul Dehghani, and Rouhollah Aghajani, “Angular Resolution Enhancement of the Multi-Input Multi-Output Radar by Using the 2D Nested Array Method,” JOURNAL OF INTELLIGENT PROCEDURES IN ELECTRICAL TECHNOLOGY, vol. 11, no. 43 , pp. 1–12, 2020, [Online]. Available: https://sid.ir/paper/403692/en

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