Results 251 to 260 of about 560,539 (289)

Protocol to develop a 3D mouse autologous lung tumor-immune spheroid co-culture model to advance radiotherapy-based treatments. [PDF]

STAR Protoc
León S, Quintas ST, Otegui N, Redrado M, Aristu JJ, Oliveira MJ, Calvo A, Castro F, Serrano D.   +8 more
europepmc   +1 more source

Detection of Degraded Star Observation Using Singular Values for Improved Attitude Determination. [PDF]

Sensors (Basel)
Kim K.
europepmc   +1 more source

Lifestyle intervention to prevent postpartum type 2 diabetes in Asian women with recent gestational diabetes and normal post-pregnancy glucose tolerance: study protocol for a randomized controlled trial with a targeted postpartum lifestyle programme. [PDF]

Trials
Quah PL, Song H, Han WM, Lim EJK, Bakar MAA, Fadzully F, Tan LK, Suzanna S, Eriksson JG, Chan SY, Finkelstein EA, Tan KH.   +11 more
europepmc   +1 more source

Toward using cosmic rays to image cultural heritage objects. [PDF]

iScience
Giammanco A, Al Moussawi M, Boone M, De Kock T, De Roy J, Huysmans S, Kumar V, Lagrangev M, Tytgat M.   +8 more
europepmc   +1 more source

Centroid determination hardware algorithm for star trackers [PDF]

International Journal of Sensor Networks, 2020
The execution of centroid extraction algorithms using a microprocessor consumes considerable resources when compared to the other steps involved in star trackers.
Eduardo Bezerra, Laio Oriel Seman, Gabriel Marcelino   +2 more
exaly   +1 more source

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Autonomous Star Tracker Performance

57th International Astronautical Congress, 2006
Abstract First in NASA's New Frontiers series of missions, the New Horizons spacecraft was successfully launched on January 19, 2006. New Horizons is scheduled to perform a gravity assist at Jupiter on February 28, 2007, arrive at Pluto on July 14, 2015; completing an extended mission to at least one Kuiper Belt Object in subsequent years.
Gabe D. Rogers, Marsha R. Schwinger, James T. Kaidy, Thomas E. Strikwerda, Roberto Casini, Andrea Landi, Rossano Bettarini, Stefano Lorenzini   +7 more
openaire   +1 more source

The ROSAT Star Tracker

SPIE Proceedings, 1986
A high precision star tracker has been developed as part of the attitude measurement and control system of the German Roentgen-Satellit ("ROSAT"). A Peltier cooled CCD array in the focal plane of an 82 mm refractive lens is used to measure the position of up to 3 stars within a field of view (FOV) of 5.9° x 4.4°. The position of a fourth reference star
Gunter Lange, Bernhard MoBbacher, David Purll   +2 more
openaire   +1 more source

Star tracker for the infrared

Applied Optics, 1986
A computer-controlled star tracker has been built for use in the IR. A small dedicated computer is the active element in a servo loop that moves two small mirrors located in the light path and keeps the light beam centered in the input aperture of an IR heterodyne spectrometer.
openaire   +2 more sources

Vidicon Star Tracker

Applied Optics, 1966
In many applications of star trackers, extremely short acquisition times, as well as accuracy and sensitivity, are required. Tracking systems employing the vidicon as a radiation sensor have been shown to provide the necessary speed of acquisition for such applications.
openaire   +2 more sources

A fast recognition algorithm for star identification of star trackers

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
This paper focuses on recognizing the correct match of star identification among multiple possible candidates for star trackers. Derived from the perturbation theory, a tolerance criterion is proposed and proved to check the correctness of the candidates.
Xiaochu Wang, Changhao Sun, Ting Sun 0005, Hang Yin, Fei Xing   +4 more
openaire   +1 more source