The emerging BeiDou navigation satellite system has contributed to global precise positioning and has recently moved toward space-borne applications.However, the contribution of BeiDou on LEO orbit determination applications is limited by the poor brands of ely precision of the GEO satellite orbit and clock products.Current researches suggest that
Forming the inner layer of the vascular system, endothelial cells (ECs) facilitate a multitude of crucial physiological processes throughout the body.Vascular ECs enable the vessel wall passage of nutrients and diffusion of oxygen from the blood into adjacent cellular structures.ECs regulate vascular tone and blood coagulation as well as zilla wate
Aiming at the formation problem in the cooperative navigation of unmanned aerial vehicle swarm, a cooperative position error analysis method based on cooperative dilution of precision is studied in this article.During cooperative flight, the unmanned aerial vehicle swarm can use the received position and ranging information of the adjacent unmanned
In this study we compile and present results from the factor analysis of 43 Aerosol Mass Spectrometer (AMS) datasets (27 of the datasets are reanalyzed in this work).The components from all sites, when taken together, provide a holistic overview of Northern Hemisphere organic aerosol (OA) and its evolution in the atmosphere.At most sites, the OA ca