Frequency stability requirements for space communications and tracking systems.
Frequency stability requirements for space communications and tracking systems
PHASE LOCK↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Compensatory tracking with visual and tactile displays.
Visual and tactile display for compensatory tracking, noting conditions for minimum error, mean square error, etc
SENSORY FEEDBACK↗
A comparison of binary delay-lock tracking-loop implementations.
Binary delay-lock tracking-loop performance for various RF implementations
PHASE DETECTOR↗
Accuracy in the determination of lunar transponder location from postarrival tracking.
Accuracy of spacecraft landing location on lunar surface determined from postarrival tracking, considering effect of various mission-dependent parameters
SPACECRAFT TRACKING↗
Finite time stochastic stability and the analysis of tracking systems.
Liapunov functions for finite time stochastic stability and analysis of tracking system
SYSTEM STABILITY↗
An adaptive tracking filter for the stabilization of bending modes in flexible vehicles.
Simulation results of adaptive tracking filter application to stabilization of structural bending modes of SI-B launch vehicle
BENDING THEORY↗
Cassegrainian monopulse tracking antenna for space rendezvous.
Cassegrain monopulse tracking antenna for LEM and Command Module rendezvous guidance
APOLLO PROJECT↗
Lunar orbiter - Tracking data indicate properties of Moon's gravitational field.
Tracking data for Lunar Orbiter I producing first estimate of overall gravitational field of Moon, noting spacecraft will not impact on Moon before completing photographic mission
SATELLITE TRACKING↗
Tesseral harmonics of the Earth's gravitational field from camera tracking of satellites.
Tesseral harmonics of Earth gravitational field camera tracking of five satellites
TESSERAL HARMONICS↗
A sampled - data pursuit tracking model.
Evaluation of sampled data pursuit tracking model
SAMPLED DATA SYSTEM↗
Pulse models of human operators performing compensatory tracking with coordinated multiple inputs
Human performance and eye movements of operator performing compensatory tracking with coordinated multiple inputs
COMPENSATORY TRACKING↗
Further Evidence on Secondary Task Interference in Tracking
Influence of secondary task interference in tracking
TRACKING STUDY↗
Digital communication and tracking - Calculation of range-clock jitter
Clock-jitter calculation for ranging receiver system - digital communication and tracking
TRACKING↗
Tracking systems, their mathematical models and their errors. Part II - Least squares treatment
Mathematical models for effect of tracking systems on RMS errors in spacecraft position and velocity - least squares method
ROOT-MEAN-SQUARE ERROR↗
Passive infrared acquisition and tracking system analysis, task II
Apollo passive infrared acquisition and tracking system analysis
APOLLO SPACECRAFT↗
Orbit determination of two spacecraft through the use of earth-based multiple-link Doppler tracking data
Orbit determination of two spacecraft using earth based multiple link Doppler tracking data
SPACECRAFT ORBIT↗
Digital communication and tracking - Limit-cycles in passive-filter phase-locked loops
Limit cycles in passive filter phase locked loops of digital communication and tracking systems
TRACKING FILTER↗
Digital communication and tracking - The mean-square approximation to the optimum cross-correlation function
Mean square approximation to optimum cross correlation function for tracking device
TRACKING SYSTEM↗