Results 31 to 40 of about 1,166 (180)
A Cognitive Beamforming Method via Range-Doppler Map Features for Skywave Radar
Remote Sensing, 2022 For skywave over-the-horizon radar, beamforming techniques are often used to suppress airspace radio frequency interference because the high-frequency band is shared by many devices.
Zhenshuo Lei +4 more
doaj +1 more source
Evaluation of the effect of sporadic-E on high frequency radio wave propagation in the Arctic [PDF]
, 2022 High Frequency (HF) radio propagation, and applications such as Over-The-Horizon Radar (OTHR), is sensitive to ionospheric disturbances caused by space weather.
T. Thayaparan (12561370) +5 more
core +3 more sources
Fuzzy Functional Dependencies as a Method of Choice for Fusion of AIS and OTHR Data
, 2019 Maritime situational awareness at over-the-horizon (OTH) distances in exclusive economic zones can be achieved by deploying networks of high-frequency OTH radars (HF-OTHR) in coastal countries along with exploiting automatic identification system (AIS ...
Nikola Stojkovic +4 more
core +1 more source
IEEE Access, 2018 In over-the-horizon radar (OTHR), atmospheric noise and sea clutter exist in different regions of Range-Doppler map. To improve the detection performance, a combined method is proposed to identify the cell-under-test (CUT) and estimate the parameters of ...
Yang Li, Longshan Wu, Ning Zhang
doaj +1 more source
Adaptive processing method for interference cancellation in sky-wave OTHR
The Journal of Engineering, 2019 An algorithm is proposed to cancel the spatially non-stationary high-frequency (HF) interference in the returns of sky-wave over-the-horizon radar (OTHR).
Dongdong Jia, Baiqiang Zhang, Junhao Xie
doaj +1 more source
OTHR-10. Pilocytic astrocytoma with respect to treatment
Neuro-Oncology, 2022 Abstract AIM: To describe the sizes of pilocytic astrocytoma with respect to treatment Methodology Pediatric pilocytic astrocytomas cases from 2001 to 2021 were retrospectively reviewed in this Institutional Review Board approved study.
Hwee Tang, Phua, Nisa, Sameema
openaire +1 more source
Seascape Connectivity Shapes Genetic and Species β‐Diversity in Tropical Reef Fishes
Ecology and Evolution, Volume 16, Issue 6, June 2026.Our study combines species occurrence data from five reef fish families with genomic SNP data for 19 species. A correlation between genetic and species β‐diversity emerges only in the Western Indian Ocean, where higher genetic β‐diversity and significant isolation by distance at both the population and community levels are detected.
Maurine Vilcot +16 more
wiley +1 more source
Modeling the Impact of Sporadic-E on Over-the-Horizon Radar (OTHR) in the Polar Region [PDF]
Recent studies have highlighted the frequent occurrence of sporadic-E (Es) layers—thin, localized zones of enhanced electron density—especially in high-latitude and polar regions. To address this, a new statistical model for Es has been incorporated into
Chiu, Marana +2 more
core +1 more source
A New Approach to OTH Main Parameters Determination [PDF]
Radioengineering, 2019 In this work, we propose a method based on a simulation that incorporates several models to provide the set of parameters needed on Over-The-Horizon radars (OTHR) performance evaluation, which consists in a versatile software tool.
Z. Saavedra +3 more
doaj
MicrobiologyOpen, Volume 15, Issue 2, April 2026.Eighty‐four endophytic bacteria from cassava were assessed for antagonistic activity against phytopathogens Colletotrichum siamense, Colletotrichum sublineola and Phytophthora infestans infecting cassava, sorghum and potato, respectively. Fourteen endophytic bacteria exhibited antifungal activity against the three phytopathogens, of which four ...
Roselyne Nyawir Owino +3 more
wiley +1 more source