Open AccessSynthesis of thinned planar arrays with two‐fold redundancy for microwave interferometric radiometers
Author(s) -
Hu Fei,
Zhu Dong,
Peng Xiaohui,
Tang Peiwen
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2017.4825
Subject(s) - planar , redundancy (engineering) , interferometry , microwave , planar array , computer science , radiometer , fold (higher order function) , algorithm , electronic engineering , optics , physics , engineering , telecommunications , computer graphics (images) , programming language , operating system
The synthesis of thinned planar arrays with two‐fold redundancy in microwave interferometric radiometers (MIRs) is discussed. Based on (double) difference bases, a deterministic method is proposed for constructing two‐fold redundancy planar arrays (TFRPAs). The resulting TFRPAs sample the spatial frequencies at least twice within a given baseline coverage, which contributes to the reliability of MIR systems. A comparative study with two typical TFRPAs (i.e. the open‐ended ‘ Cross ’ and the closed ‘ ◻ ’ array configurations) is carried out, concerning array sampling efficiency in the spatial frequency domain. The numerical examples are presented to demonstrate the effectiveness of the proposed synthesis method.