The lunar-solar effect on the orbital lifetimes of artificial satellites with highly eccentric orbits
Lunar solar perturbation effect on orbital lifetimes of artificial satellites with highly eccentric orbits
GRAVITATIONAL EFFECT↗
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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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An adaptation of the lunar orbiter photographic system for orbital reconnaissance of Mars.
Orbital reconnaissance of Mars in 1971 using modified Lunar Orbiter spacecraft, noting photographic system, trajectory, launch system, etc
LUNAR ORBITER↗
Single Frequency GPS Orbit Determination for Low Earth Orbiters
A number of missions in the future are planning to use GPS for precision orbit determination. Cost considerations and receiver availability make single frequency GPS receivers attractive if the orbit accuracy requirements can be met.
GPS global positioning satellite GPS/MET orbit det↗
Precise Orbit Determination for Low-Earth Orbiting Satellites using GPS Data: Recent Advances
In this paper, we describe some recent advances in GPS-based precise orbit determination for low-Earth orbiting satellites.
Low-Earth Orbiting Satellites GPS Earth science WA↗
Free Space Laser Communication Experiments from Earth to the Lunar Reconnaissance Orbiter in Lunar Orbit
Laser communication and ranging experiments were successfully conducted from the satellite laser ranging (SLR) station at NASA Goddard Space Flight Center (GSFC) to the Lunar Reconnaissance Orbiter (LRO) in lunar orbit. The experiments used 4096-ary pulse position modulation (PPM) for the laser pulses during one-way LRO Laser Ranging (LR) operations. Reed-Solomon forward error correction codes were used to correct the PPM symbol errors due to atmosphere turbulence and pointing jitter. The signal fading was measured and the results were compared to the model.
laser communication↗
Orbit Maintenance For Low Altitude Near-Circular Lunar Orbits
The behavior of low altitude near-circular lunar orbits is a key design issue for some missions in the proposed Space Exploration Initiative. The Lunar gravity field strongly perturbs low altitude orits, so an effective orbit maintenance strategy is needed.
Near-Ciucular↗
A Comparison of TOPEX/Poseidon TDRESS-based Operational Orbit Determination Results with the Precision Orbit Ephemeris
Since its' launch on August 10, 1992, the TOPEX/Poseidon satellite hs successfully observed the earth's ocean circulation using a combination of precision orbit determination (POD) and dual-frequency radar altimetry.
orbit maintenance maneuvers (OMMs) POD laser rangi↗
Data for vehicle design for earth orbit to mars orbit and return.
Payload and speed requirements of an earth orbit to mars orbit and return manned spacecraft, using a nuclear heat exchanger-type propulsion system
NUCLEAR PROPULSION↗
The orbiting astronomical observatory and the orbiting solar observatory
Orbiting Solar Observatory and Orbiting Astronomical Observatory
OSO↗
Two-center problem orbits as intermediate orbits for the restricted three-body problem
Two-center problem orbit as intermediate orbit for restricted three-body problem
CELESTIAL MECHANICS↗
[Saturn V/S-IVB Stage Low Gravity Fluid Mechanics Problems and Saturn IB Liquid Hydrogen Orbital Experiment to Verify Propellant Ullaging and Orbital Venting System]
Saturn V/S-IVB stage low gravity fluid mechanics problems and Saturn IB liquid hydrogen orbital experiment to verify propellant ullaging and orbital venting system
SATURN IB LAUNCH VEHICLE↗
Scientific experiments on Gemini and Apollo earth orbital flights as precursors to Apollo extension and ORL earth orbital missions.
Gemini and Apollo Earth Orbital flights as precursors to Apollo extension and ORL Earth Orbital missions
GEMINI PROJECT↗
Relation of meteor orbits to the orbits of comets and asteroids
Meteor orbit distribution compared with comet and asteroid orbit distribution
COMET↗
Design parameters for an orbiting topside sounder for Mars and Venus and some comparisons with the orbiting occultation experiment
Design parameters for orbiting topside sounder for Mars and Venus, and comparisons with earth orbiting occultation experiment
Sill, W. R.↗
Orbit determination for Lunar Orbiter.
Orbit determination for Lunar Orbiter, describing computer program and studying Doppler residuals
Mayo, A. P.↗
A comparison of a class of earth-moon orbits with a class of rotating Kepler orbits
Comparison of class of orbits in Earth-Moon field and class of Kepler orbits in rotating coordinates by use of concurrent series of graphs
Hoelker, R. F.↗
On the identification of observable orbit parameters, with application to lunar orbiter tracking.
Orbit parameters identification method based on given tracking data span applied to lunar orbiter tracking using Fourier analysis
Pfeiffer, C. G.↗
Simple method of using onboard optical measurements to predict the orbit established after the lunar-ascent-transfer orbit
Onboard optical measurements of angles for orbit prediction established after lunar-ascent and transfer orbits
Baker, L. K.↗