Paper Info
Title
Coarseness in OTHR Image and Its Application for Diagonal Loading Factor Determination
Abstract
The sky-wave over-the-horizon radar is easily interfered with by radio frequency interference (RFI) since the high-frequency band is shared by many radio devices. Various RFI suppression techniques have been developed by both spatial and temporal processing. However, in practice, where the interference characteristic is usually unknown, it is still hard to evaluate the effects of interference suppression. In this letter, the Tamura coarseness is introduced as an indicator to evaluate the RFI and its suppression algorithms. By analyzing the range-Doppler maps with RFI, the relationship between coarseness and signal-to-interference-plus-noise ratio is established. An application example of coarseness is also given, in which the diagonal loading factor of adaptive beamformer is optimized. The analysis of coarseness and performance of proposed scheme are demonstrated by experimental data.
Year
DOI
Venue
2020
10.1109/LGRS.2019.2950229
IEEE Geoscience and Remote Sensing Letters
Keywords
DocType
Volume
Diagonal loading (DL),over-the-horizon radar (OTHR),radio frequency interference (RFI),Tamura coarseness
Journal
17
Issue
ISSN
Citations 
9
1545-598X
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Zhaoyi Wang121.04
Zhongtao Luo223.42
Zishu He322854.71
Shengnan Shi4173.60