Results 101 to 110 of about 701,425 (185)
DSS 43 antenna gain analysis for Voyager Uranus encounter: 8.45-GHz radio science data correction [PDF]
A malfunction of the Deep Space Network (DSN) 64-meter antenna in Australia forced the antenna to operate with a mispositioned subreflector during the Voyager Uranus encounter period (January 24, 1986).
Imbriale, W. A., Slobin, S. D.
core +1 more source
Bilateral deep brain stimulation of the subthalamic nucleus increases pointing error during memory-guided sequential reaching. [PDF]
Exp Brain Res, 2018 David FJ +4 more
europepmc +1 more source
Microgravity cursor control device evaluation for Space Station Freedom workstations [PDF]
This research addressed direct manipulation interface (curser-controlled device) usability in microgravity. The data discussed are from KC-135 flights. This included pointing and dragging movements over a variety of angles and distances.
Adam, Susan +3 more
core +1 more source
Disturbance torque rejection properties of the NASA/JPL 70-meter antenna axis servos [PDF]
Analytic methods for evaluating pointing errors caused by external disturbance torques are developed and applied to determine the effects of representative values of wind and friction torque.
Hill, R. E.
core +1 more source
Pointing-error simulations of the DSS-13 antenna due to wind disturbances [PDF]
Accurate spacecraft tracking by the NASA Deep Space Network (DSN) antennas must be assured during changing weather conditions. Wind disturbances are the main source of tracking errors. The development of a wind-force model and simulations of wind-induced
Bienkiewicz, B. +2 more
core +1 more source
Slew maneuvers on the SCOLE Laboratory Facility [PDF]
The Spacecraft Control Laboratory Experiment (SCOLE) was conceived to provide a physical test bed for the investigation of control techniques for large flexible spacecraft. The control problems studied are slewing maneuvers and pointing operations.
Williams, Jeffrey P.
core +1 more source
MPA-based pointing calibration for Q/V band LEO canted antennas. [PDF]
Sci RepRen P, Zhou G, Li X, Han J.
europepmc +1 more source