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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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Precision laser tracker capable of tracking a low acceleration target to an accuracy of about 20 microradians rms is being constructed and tested. This laser tracking has the advantage of discriminating against other optical sources and the capability of simultaneously measuring range.
Computer program for analysis or design of carrier tracking or clock tracking loops of Deep Space Instrumentation Facility receiver
Human sensory-motor interactions during performance of manual control tasks using high inertia tracking systems - optimum display and control systems for tracking missiles
Pursuit tracking and compensatory tracking models for mimicking human operators under conditions of high frequency inputs
Surveyor 7 post-landing tracking data analysis, and determining selenocentric location of probe and geocentric locations of tracking stations
Laser tracking system having automatic target acquisition capability intended for precision launch phase tracking
Theoretical aspects of radar tracking problem and design criteria for radar tracking systems
Data transition tracking in digital communication systems by decision directed phase tracking loops
Target displacement and track coherence in pursuit tracking tasks experiments for human performance studies
Tracking and data acquisition systems for spacecraft and ground link through command, telemetry and tracking, noting data relay satellites, etc
Orbit parameters identification method based on given tracking data span applied to lunar orbiter tracking using Fourier analysis
Tracking oscillator consists of modified phase-lock loop which controls voltage-controlled oscillator capable of automatic lock-on and track of periodic input waveform over frequency ratio 500-1. It is used in telemetry and communications systems where large signal fluctuations are encountered.
Tracking and data relay satellite system performance by ATS and Nimbus spacecraft for range and range rate tracking and command and data transmission
Design and development of tracking receiver for tracking satellites and receiving radio signal transmissions under adverse noise conditions
Tracking mount for laser telescope employed in tracking large rockets and space vehicles to give information regarding azimuth and elevation
Plastic track detectors calibration for heavy charged particles in cosmic ray experiments, considering track etching rates as function of particle charge and velocity
Solar particle tracks in clear filter glass from Surveyor 3 spacecraft, comparing with lunar rocks track results
Gas rich Kapoeta howardite composition, evolution, high particle fossil track densities and normal track rich crystals spatial relations