Results 111 to 120 of about 166,231 (222)

NAVIGATION PERFORMANCE IN HIGH EARTH ORBITS USING NAVIGATOR GPS RECEIVER [PDF]

NASA GSFC has developed a GPS receiver that can acquire and track GPS signals with sensitivity significantly lower than conventional GPS receivers. This opens up the possibility of using GPS based navigation for missions in high altitude orbit, such as ...
Bamford, William, Moreau, Michael C., Naasz, Bo   +2 more
core   +1 more source

Differential GPS for small UAS using consumer-grade single-frequency receivers [PDF]

, 2013
Consumer-grade single-frequency GPS receivers with their known limitations are the predominant means of localization for small Unmanned Aircraft Systems (UAS).
Bolting, Jan, Defaÿ, François, Moschetta, Jean-Marc   +2 more
core  

Advanced tracking systems design and analysis [PDF]

The results of an assessment of several types of high-accuracy tracking systems proposed to track the spacecraft in the National Aeronautics and Space Administration (NASA) Advanced Tracking and Data Relay Satellite System (ATDRSS) are summarized ...
Cunningham, K., Floyd, L., Jacobsen, A., Kapoor, A., Kwadrat, C., Mccarthy, J., Potash, R., Radel, J.   +7 more
core   +1 more source

Izračun položaja GPS-satelita iz podatkov preciznih efimerid : GPS-orbit computation from precise ephemeris data [PDF]

Geodetski Vestnik, 2005
The article describes the theoretical point of view of the GPS precise ephemerides application that should be used in most precise GPS processing. Regarding broadcast, precise ephemerides allow us to achieve a much better accuracy of the final GPS ...
Bojan Stopar, Polona Pavlovčič Prešeren   +1 more
doaj  

LunaNet: a Flexible and Extensible Lunar Exploration Communications and Navigation Infrastructure [PDF]

NASA has set the ambitious goal of establishing a sustainable human presence on the Moon. Diverse commercial and international partners are engaged in this effort to catalyze scientific discovery, lunar resource utilization and economic development on ...
Christe, Steven D., Cooper, La Vida D., Gramling, Cheryl J., Israel, David J., Johnson, Michael A., Mauldin, Kendall D., Mitchell, Jason W., Pulkkinen, Antti A., Roberts, Christopher J.   +8 more
core   +1 more source

Real-time relative positioning of spacecraft over long baselines [PDF]

, 2014
This paper deals with the problem of real-time onboard relative positioning of low Earth orbit spacecraft over long baselines using the Global Positioning System.
Grassi M, Renga A, Tancredi U
core  

The Implementation of Precise Point Positioning (PPP): A Comprehensive Review. [PDF]

Sensors (Basel), 2023
Elsheikh M, Iqbal U, Noureldin A, Korenberg M.   +3 more
europepmc   +1 more source

Application of GPS tracking techniques to orbit determination for TDRS [PDF]

In this paper, we evaluate two fundamentally different approaches to TDRS orbit determination utilizing Global Positioning System (GPS) technology and GPS-related techniques. In the first, a GPS flight receiver is deployed on the TDRSS spacecraft.
Haines, B. J., Lichten, S. M., Malla, R. P., Wu, S. C.   +3 more
core   +1 more source

Manual Gridding of DRIR Facsimile Pictures [PDF]

Method for manual geographical referencing of direct readout infrared radiometer data from Nimbus C ...
Smith, R. B.
core   +1 more source

Performance Evaluation of CentiSpace Navigation Augmentation Experiment Satellites. [PDF]

Sensors (Basel), 2023
Chen L, Lv F, Yang Q, Xiong T, Liu Y, Yang Y, Pan H, Wang S, Liu M, He R, Zheng D, Zhang L, Jin Y.   +12 more
europepmc   +1 more source