Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Timothy Crain"'
Publikováno v:
Journal of Spacecraft and Rockets. 58:164-181
Image-based terrain relative navigation is expected to play an important role in the safe operation of upcoming lunar exploration missions. This work provides a detailed treatment of how visual odo...
Autor:
Andrew Gabell, Timothy Crain, Glenn D Hines, Farzin Amzajerdian, Bruce W Barnes, David Becker, Helen Tuckett, Jack McCubbine, Shaun Stewart, Geoff Wells, Wayne Hewison, Andrew McGrath, Will Featherstone, Mathew Tubb, Scott Moore, Jamin Greenbaum
Airborne gravimetry relies on removing inertial aircraft accelerations from total accelerations measured by an onboard gravimeter. NASA developed a Navigation Doppler Lidar ('NDL') for the US Space Program. The NDL measures velocities at the 1 mm/sec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b8e2cf5572f857a06a1d162e12e3633
Autor:
Robert H. Bishop, John Christiank, Nikolas Trawny, John M. Carson, Timothy Crain, Chad Hanak, Kyle J. DeMars
Publikováno v:
AIAA Guidance, Navigation, and Control Conference.
The navigation filter architecture successfully deployed on the Morpheus flight vehicle is presented. The filter was developed as a key element of the NASA Autonomous Landing and Hazard Avoidance Technology (ALHAT) project and over the course of 15 f
Autor:
John Christiank, Jacob J. Sullivan, Robert H. Bishop, Kyle J. DeMars, Joel Getchiusyy, Nikolas Trawny, John M. Carson, Tom Campbell, Timothy Crain, Chad Hanak
Publikováno v:
Scopus-Elsevier
The Morpheus Project began in late 2009 as an ambitious e ort code-named Project M to integrate three ongoing multi-center NASA technology developments: humanoid robotics, liquid oxygen/liquid methane (LOX/LCH4) propulsion and Autonomous Precision La
Publikováno v:
Journal of Spacecraft and Rockets. 40:882-888
A genetic algorithm is used cooperatively with the Davidon‐Fletcher‐Powell penalty function method and the calculus of variations to optimize low-thrust, Mars-to-Earth trajectories for the Mars Sample Return Mission. The return trajectory is chos
Publikováno v:
Journal of Guidance, Control, and Dynamics. 25:394-403
A prototype autonomous/adaptive interplanetary navigation system employing neural networks and genetic algorithms is introduced. This system consists of a near real-time autonomous monitoring component and an ofe ineadaptivemodelingcomponent.Unexpect
Publikováno v:
The Journal of the Astronautical Sciences. 48:287-303
This study illustrates an automated approach for filter tuning (via model optimization) using a genetic algorithm (GA) coupled with an extended Kaiman filter. In particular, the solar radiation pressure (SRP) model of the Mars Pathfinder (MPF) spacec
This case study, collaboratively authored by a university researcher and five high school students, presents a model for assessing community partnerships that employs Web 2.0 technologies to facilitate participatory evaluations. A research team of hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a57c7ab892f2888dfc7ef35d68b1467
https://doi.org/10.4018/978-1-60960-623-7.ch001
https://doi.org/10.4018/978-1-60960-623-7.ch001
Publikováno v:
Journal of Spacecraft and Rockets. 38:289-291
Publikováno v:
AIAA Guidance, Navigation, and Control Conference.