Results 101 to 110 of about 198,426 (303)
Precise estimation of tropospheric path delays with GPS techniques [PDF]
Tropospheric path delays are a major source of error in deep space tracking. However, the tropospheric-induced delay at tracking sites can be calibrated using measurements of Global Positioning System (GPS) satellites.
Lichten, S. M.
core +1 more source
GPS signal acquisition and tracking using software GPS receiver
Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, 2005., 2006 In this paper we investigate GPS signal acquisition and tracking using software GPS receiver. The software GPS receiver consists of a RF front-end, an ADC, and a software GPS program that runs on PC. The RF front-end down-converts the signal from RF to IF, and the ADC samples the IF signal.
null Falin Wu +2 more
openaire +2 more sources
Business Strategy and the Environment, EarlyView.ABSTRACT Implementing digital technologies is touted as the next big step for the firms aiming to improve sustainability in their supply chains. These technologies are often credited with the potential to improve transparency and achieve sustainability.
Amna Farrukh, Aqeel Ahmed, Sadaat Yawar
wiley +1 more source
GPS tracking system for autonomous vehicles
Alexandria Engineering Journal, 2018 This paper presents a proposed design of a mechatronics system for autonomous vehicles. The proposed design is able to memorize a route based on Global Positioning System (GPS) rather than using pre-saved maps that are infrequently updated and do not ...
Yassine Zein +2 more
doaj +1 more source
Developmental Dynamics, EarlyView.Abstract Background Biomineralization is a vital biological process through which organisms produce mineralized structures such as shells, skeletons, and teeth. Microtubules are essential for biomineralization in various eukaryotic species; however, their specific roles in this process remain unclear.
Areen Qassem +2 more
wiley +1 more source
The effect of clock, media, and station location errors on Doppler measurement accuracy [PDF]
Doppler tracking by the Deep Space Network (DSN) is the primary radio metric data type used by navigation to determine the orbit of a spacecraft.
Miller, J. K.
core +1 more source
Hot spots or hot moments? Contextualizing the spatio‐temporal scale of research on animal inputs
Ecography, EarlyView.Mammals play important roles in redistributing elements across ecosystems, concentrating biogeochemical inputs across both space and time. However, research on zoogeochemical inputs is often constrained by logistical considerations, potentially limiting our knowledge of mammals' impacts on biogeochemical patterns and processes.
Kristy M. Ferraro +3 more
wiley +1 more source
Spacecraft applications of advanced global positioning system technology [PDF]
The purpose of this study was to evaluate potential uses of Global Positioning System (GPS) in spacecraft applications in the following areas: attitude control and tracking; structural control; traffic control; and time base definition (synchronization).
Austin, Richard +5 more
core +1 more source
VEHICLE TRACKING SYSTEM USING GPS
, 2013 Global Positioning System is used for tracking vehicle. This paper describes vehicle tracking system with the help of GPS and Wi-Fi. Tracking unit is kept inside the vehicle. User can monitor moving vehicle using this system. Wi-Fi and GPS technology is powerful technology. GPS satellite transmits signals in the form of latitude and longitude.
openaire +1 more source
Monitoring animal movement diversity as a component of biodiversity
Frontiers in Ecology and the Environment, EarlyView.Animal movement is increasingly being quantified in novel ways, with high potential for integration into broad‐scale efforts to monitor biological diversity. Here, we define movement diversity as a form of biodiversity, measuring variation in animal movement from the level of individual animals to communities. We present a framework to develop a common
Nicholas J Russo +6 more
wiley +1 more source