Suppression of Continuous Wave Interference in Loran-C Signal Based on Sparse Optimization Using Tunable Q-Factor Wavelet Transform and Discrete Cosine Transform [PDF]
Sensors, 2021 Loran-C is the most essential backup and supplementary system for the global navigation satellite system (GNSS). Continuous wave interference (CWI) is one of the main interferences in the Loran-C system, which will cause errors in the measurement of the ...
Wenwen Ma +4 more
doaj +2 more sources
Precise Loran-C Signal Acquisition Based on Envelope Delay Correlation Method [PDF]
Sensors, 2020 The Loran-C system is an internationally standardized positioning, navigation, and timing service system. It is the most important backup and supplement for the global navigation satellite system (GNSS).
Wenhe Yan +4 more
doaj +2 more sources
Demodulation Method for Loran-C at Low SNR Based on Envelope Correlation–Phase Detection [PDF]
Sensors, 2020 Loran-C is the most important backup and supplement system for the global navigation satellite system (GNSS). However, existing Loran-C demodulation methods are easily affected by noise and skywave interference (SWI).
Jiangbin Yuan +3 more
doaj +2 more sources
High-Power Coupled Wideband Low-Frequency Antenna Design for Enhanced Long-Range Loran-C Timing Synchronization [PDF]
SensorsPrecise timing synchronization remains a fundamental requirement for modern navigation and communication systems, where the miniaturization of Loran-C infrastructure presents both technical challenges and practical significance. Conventional miniaturized
Jingqi Wu +7 more
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Research on the Loran-C Pseudorange Positioning Method Based on an Ellipsoidal Geodesic Model and Its Application in Inland Areas [PDF]
SensorsThe Loran-C system employs the spherical hyperbola positioning (SHP) method. However, SHP has three drawbacks in inland regions: first, approximating the Earth’s ellipsoid as a sphere introduces positioning errors; second, hyperbola positioning ...
Ao Gao +6 more
doaj +2 more sources
Alternative Approaches to Bilateral Stellate Ganglion Block for Treatment of Refractory Ventricular Arrhythmia. [PDF]
Case Rep AnesthesiolIntroduction and Importance Patients with ventricular arrhythmias (VAs) refractory to medical treatment suffer high morbidity and mortality. The stellate ganglion block is an effective diagnostic and therapeutic tool for refractory VAs. Case Presentation After obtaining an informed consent, we describe a case of a 62‐year‐old female who suffered ...
Skinner C +6 more
europepmc +2 more sources
IET Radar, Sonar & NavigationConventional Loran‐C is mainly used for low‐altitude users; however, when the Loran‐C signal station or receiving point is at a higher altitude, the ranging error caused by the elevation change cannot be ignored.
Ao Gao +6 more
doaj +2 more sources
Climate Change and Aflatoxin B<sub>1</sub> in Agriculture Products: A Systematic Review. [PDF]
Food Sci NutrClimate change mainly involves increasing temperatures and concentrations of the greenhouse gas carbon dioxide. These changes increase the expression of genes for mycotoxin synthesis, including aflatoxin B1, in fungi. These stressors also lead to reduced plant defenses against fungal infections.
Tajdar-Oranj B +5 more
europepmc +2 more sources
Marine Benthic Community Assembly Is Taxonomically Stochastic but Functionally Deterministic in a Dynamic Coastal Sea. [PDF]
Ecol LettWe assessed the balance between deterministic and stochastic processes in macrozoobenthic community assembly across 1323 sites in the Dutch Wadden Sea. Species‐based patterns were largely stochastic, while trait‐based patterns were more environmentally driven, with little influence from hydrodynamic disturbance.
Sloots M +5 more
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Design of Loran-C receiving antenna with high-performance
Dianzi Jishu Yingyong, 2022 A kind of magnetic antenna with order series multi-layer coils is made for improving the receiving ability of the Loran-C magnetic antenna. The signal-to-noise ratio and sensitivity of order series multi-layer coil magnetic antenna are derived ...
Gao Jiuxiang +3 more
doaj +1 more source