Results 1 to 10 of about 1,209,286 (305)
Error Self-calibration Method in Spatial Spectrum Estimation
An important bottleneck in spatial spectrum estimation theory is array errors. A new error self-calibration method is presented on the basis of active error calibration and online self-calibration theories.
Huang Chuan-lu, Chao Kun, Mao Yun-zhi
doaj +1 more source
АНАЛИЗ ГЕОМАГНИТНЫХ ДАННЫХ И КОСМИЧЕСКИХ ЛУЧЕЙ В ПЕРИОДЫ ПОВЫШЕННОЙ СОЛНЕЧНОЙ АКТИВНОСТИ [PDF]
We performed analysis of the cosmic rays variations and studied features of geomagnetic field variations during periods of increased solar activity. The paper applies a new methods of modeling and analysis of the data developed by the authors based on ...
O.V. Mandrikova +3 more
doaj +1 more source
Simultaneous lithospheric-atmospheric signals of acoustic emission at “Karymshina” site in Kamchatka [PDF]
We present the results of complex lithospheric-atmospheric investigations of acoustic emission in a seismically active region (Kamchatka peninsula).
Larionov Igor +2 more
doaj +1 more source
Clutter rejection is a key technique used by passive radars for target detection. Especially when using Single Frequency Network (SFN) configuration, the multipath clutter and ground clutter increase several times more than during a single illuminator ...
Yi Jian-xin +4 more
doaj +1 more source
Influences of the state of ionospheric background on ionospheric heating effects
According to the well-performed ionospheric heating experiments at Arecibo in the low latitudes as well as at Tromsø in the high latitudes, the large-scale modification effects are simulated under an assumption of equivalent conditions, i.e., with the ...
Shuji Hao +6 more
doaj +1 more source
Comparative Analysis of Starlight Occultation Data Processing
In order to improve the inversion accuracy of stellar occultation data and to provide a reference for the selection of inversion methods with higher accuracy in the future, this study compared and analyzed the inversion effects of two different methods ...
Mingchen Sun +5 more
doaj +1 more source
Wave Parameter Inversion Based on Sea Clutter Characteristics
Accurate acquisition of wave parameters is important for marine monitoring and target identification. Traditional methods are limited in sea state adaptability, real-time observation, and inversion accuracy.
Xiao Li +4 more
doaj +1 more source
Machine-Learning-Based GNSS Signal Anomaly Classification Using COSMIC-2 POD Data
Ionospheric scintillation and radio frequency interference (RFI) affect Global Navigation Satellite System (GNSS) signals, making their distinction important for ionospheric monitoring and interference detection.
Ziming Liang +8 more
doaj +1 more source
Weight Loss Function for the Cooperative Inversion of Atmospheric Duct Parameters
Low-altitude atmospheric ducts are abnormal atmospheric phenomena in the troposphere, impacting the operation of microwave or ultrashort wave radio systems.
Jie Han +7 more
doaj +1 more source
Exploring Marine Atmospheric Ducts: Current Sensing and Emerging Trends
Tropospheric refraction significantly impacts the propagation of ultrashort- and microwave-frequency radio waves over marine environments. Atmospheric ducting, the most common super-refractive structure, allows radio waves to travel over the horizon ...
Jin-Peng Zhang +5 more
doaj +1 more source

