Results 51 to 60 of about 20,840 (245)
Collaborative Opportunistic Navigation [PDF]
, 2012 Aerospace Engineering and Engineering ...
Humphreys, Todd E. +2 more
core +1 more source
Energy Science &Engineering, Volume 13, Issue 12, Page 6160-6169, December 2025.ABSTRACT Mountain climbing often involves sudden weather changes, group separation, and mobile device battery depletion, which can lead to life‐threatening emergencies. Enhancing survival and extending rescue time in such situations are crucial, making power supply and emergency equipment essential considerations.
Jian‐Sheng Huang, Li‐Chin Shih
wiley +1 more source
Precise Characterization and Multiobjective Optimization of Low Noise Amplifiers [PDF]
, 2015 Although practically all function blocks of the satellite navigation receivers are realized using the CMOS digital integrated circuits, it is appropriate to create a separate low noise antenna preamplifier based on a low noise pHEMT. Such an RF front end
Cerny, D. +7 more
core +2 more sources
Thermal drone observations capture fine‐scale population decline of short‐tailed shearwaters
Remote Sensing in Ecology and Conservation, Volume 11, Issue 6, Page 773-789, December 2025.Researchers used thermal drone technology to monitor short‐tailed shearwater colonies in Tasmania from 2019 to 2024, discovering a concerning 27% decline in chick numbers during this period. The study estimates that the global population of these seabirds has dropped dramatically by 41% since 1985, falling from 23 million to approximately 13.5 million ...
Jacob Virtue +4 more
wiley +1 more source
Вестник СибАДИ, 2017 Describes a method for determining the coordinates of points on the surface based on the distance to three satellites. The method for determining the coordinates of the road and construction machinery on the surface of the Earth with the help of global ...
Mikhail Sergeevich Korytov +2 more
doaj +1 more source
Improved antenna phase center models for GLONASS [PDF]
, 2018 Thanks to the increasing number of active GLONASS satellites and the increasing number of multi-GNSS tracking stations in the network of the International GNSS Service (IGS), the quality of the GLONASS orbits has become significantly better over the last
Beutler, Gerhard +8 more
core
Equatorial Ionospheric VTEC Perturbations During the 21 June 2020 Solar Eclipse
Earth and Space Science, Volume 12, Issue 12, December 2025.Abstract The annular solar eclipse of 21 June 2020, provided a valuable opportunity to examine the ionospheric response to celestial events. This study analyzes variations in Vertical Total electron content (VTEC) over the equatorial region using data from the UQRG Global Ionospheric Map (GIM), ground‐based GPS‐TEC measurements, and equatorial ...
Atirsaw Muluye Tilahun +4 more
wiley +1 more source
An Overview of a Special Issue on Upcoming Positioning, Navigation, and Timing: GPS, GLONASS, Galileo and BeiDou [PDF]
, 2022 Chang‐Ki Hong +2 more
openalex +1 more source
On the concept of normative evaluation of cost-effectiveness of GLONASS application in coastal regions [PDF]
Baltic Region, 2011 Russia promotes the application of GLONASS satellite information system in regional economies. In three regions, the system has already been introduced and is widely used, 21 more regions are introducing the system. Experts believe that this process will
Ivchenko Vladislav, Boronilov Anatoly
doaj +1 more source
Statistical framework for estimating GNSS bias
, 2015 We present a statistical framework for estimating global navigation satellite system (GNSS) non-ionospheric differential time delay bias. The biases are estimated by examining differences of measured line integrated electron densities (TEC) that are ...
Coster, Anthea J. +4 more
core +2 more sources