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Frequency diverse array with random logarithmically increasing frequency offset
Author(s) -
Huang Gaojian,
Ding Yuan,
Ouyang Shan,
Fusco Vincent
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32337
Subject(s) - offset (computer science) , transmitter , frequency domain , radar , range (aeronautics) , computer science , frequency offset , ambiguity , electronic engineering , acoustics , algorithm , telecommunications , physics , engineering , computer vision , orthogonal frequency division multiplexing , channel (broadcasting) , aerospace engineering , programming language
The frequency diverse arrays (FDAs) have been extensively investigated since it can provide a unique angle‐range‐dependent beampattern. This range‐dependent characteristic can suppress the range ambiguous clutters, leading to many novel potential Radar applications. Two issues, however, exist in conventional FDA (CFDA) beampatterns, that is, range‐angle coupling and range periodicity. Therefore, for a CFDA Radar, target range information cannot be obtained directly from the beampattern peaks and target ambiguity occurs in the range domain. In this work, a new frequency diverse array (FDA) transmitter architecture with random logarithmically increasing frequency offset (log‐RFDA) is presented. It is shown that the proposed strategy provides a nonperiodic thumbtack‐like beampattern, eliminating the ambiguity in range domain, suffered in the CFDA Radar. Furthermore, reduced side lobe and higher detection resolution can be achieved, compared with the previously reported log‐FDA.