Results 61 to 70 of about 1,576,591 (388)
An Indoor DFEC Ranging Method for Homologous Base Station Based on GPS L1 and BeiDou B1 Signals
Sensors, 2020 High-precision navigation and positioning technology for indoor areas has become one of the research hotspots in the current navigation field. However, due to the complexity of the indoor environment, this technology direction is also one of the research
Heng Zhang +6 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Frequent false signals of precipitation in satellite passive microwave retrievals over the Aral Sea have been identified as being caused by an outdated surface database. The database includes the surface type, elevation, and the percentage of the primary
Quanhua Liu +5 more
doaj +1 more source
Formation of Multiple-Satellite Systems From Low-Mass Circumplanetary Particle Disks [PDF]
, 2014 Circumplanetary particle disks would be created in the late stage of planetary formation either by impacts of planetary bodies or disruption of satellites or passing bodies, and satellites can be formed by accretion of disk particles spreading across the Roche limit.
arxiv +1 more source
Retrieving Precipitable Water Vapor From Shipborne Multi‐GNSS Observations [PDF]
, 2019 ©2019. American Geophysical UnionPrecipitable water vapor (PWV) is an important parameter for climate research and a crucial factor to achieve high accuracy in satellite geodesy and satellite altimetry. Currently Global Navigation Satellite System (GNSS)
Ge, Maorong +8 more
core +1 more source
ISPRS International Journal of Geo-InformationSlant range geometry plays a crucial role in interpreting synthetic aperture radar (SAR) observations, especially in converting line-of-sight (LOS) surface deformations to actual vertical subsidence. This paper proposes a new conversion model to retrieve
Jie Liu +4 more
doaj +1 more source
Sensors, 2020 In view of the inability of Global Navigation Satellite System (GNSS) to provide accurate indoor positioning services and the growing demand for location-based services, indoor positioning has become one of the most attractive research areas.
Lu Huang +6 more
doaj +1 more source
Two-Layer Ring Truss-Based Space Solar Power Station
Energies, 2022 A space solar power station (SSPS) has become a huge potential candidate to provide abundant and clean electrical energy for terrestrial users by collecting and converting solar power in space. In this paper, an innovative two-layer ring truss-based SSPS
Guanheng Fan +3 more
doaj +1 more source
Monte Carlo modeling of radiation dose from radiation therapy with superficial x‐rays
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Introduction Superficial x‐rays (50–100 kVp) are used for treating non‐melanoma skin cancer and intraoperative radiation therapy (IORT). At these energies, the photoelectric effect significantly increases absorbed dose to bone compared to soft tissue.
Reham Barghash +3 more
wiley +1 more source
Global navigation satellite system [PDF]
, 2014 The last few years there has been increased interest in the commercialization of the Global Navigation Satellite System (GNSS) which is often referred to as the Global Positioning System (GPS) in various applications. A GPS system uses spread spectrum signals-binary phaseshift keying (BPSK)-emitted from satellites in space for position and time ...
openaire +3 more sources
Regulating Protein Immobilization During Cell‐Free Protein Synthesis in Hyaluronan Microgels
Advanced Biology, EarlyView.Bifunctional microgels carrying a linear DNA template and Ni2+‐activated NTA moieties are used as platform for cell‐free protein synthesis and in situ protein immobilization. By varying the concentration of NTA moieties in the microgels, the amount of GFP‐His immobilized inside the microgel and released to the microgel environment can be regulated ...
Anika Kaufmann +2 more
wiley +1 more source