42,011 to 42,020 of 42,443 Results
Feb 22, 1993
Kroger, P.; Folkner, W.; Lijima, B.; Hildebrand, C., 1993, "Very-Long-Baseline-Interferometry Measurements of Planetary Orbiters at Mars and Venus", https://hdl.handle.net/2014/34928, ['AIAA, Spacefligth Mechanics', 'Pasadena, California, USA'], JPL Open Repository
Very-long-baseline interferometric measurements of the positions of planetary orbiters/landers relative to nearby extra galactic radio sources provide information on the positions of the planets in the inertial reference frame described by the measured positions of the radio sour... |
Feb 22, 1993
Thurman, S.; Estefan, J., 1993, "Radio Doppler Navigation of Interplanetary Spacecraft Using Different Data Processing Modes", https://hdl.handle.net/2014/36690, Pasadena, California, USA, JPL Open Repository
Doppler shift measurements derived from closed-loop radio tracking of distant spacecraft by ground stations of the Deep Space Network (DSN) are one of the principal means used for interplanetary navigation. |
Feb 22, 1993
Pernicka, Henry J.; Sweetser, Theodore H.; Roncoli, Ralph B., 1993, "A strategy to Rotate The Mars Observer Orbit Node Line to Advance the Mapping Schedule", https://hdl.handle.net/2014/34941, Pasadena, California, USA, JPL Open Repository
The Mars Observer (MO) spacecraft was successfully launched on September 25, 1992 and will arrive at Mars on August 24, 1993. At Mars, the spacecraft will study the planet's surface, atmosphere, and gravitational and magnetic fields. |
Feb 22, 1993
Muellerschoen, Ronald J.; Bertiger, Willy I.; Wu, Sien C., 1993, "Gravity Recovery Analysis Using GPS for STEP and a Low-Low Satellite Mission", https://hdl.handle.net/2014/34945, Pasadena, California, USA, JPL Open Repository
The precise GPS data can additionally be used to refine the Earth's gravity field. STEP is a proposed European Space Agency mission that may also carry a flight GPS receiver. |
Feb 21, 1993
Dewitte, B.; Perigaud, C.; Chao, Y., 1993, "Nino-Nina Simulations and Predictions Over 1983-1993 from Cane and Zebiak's Model and Satellite Observation", https://hdl.handle.net/2014/36560, San Diego, California, USA, JPL Open Repository
No abstract provided |
Feb 21, 1993
Perigaud, C.; Delecluse, P.; Rogel, P., 1993, "Importance of the Barotropic Signal Evidenced by TOPEX/Poseidon and Ocean General Circulation Model in the Indian Ocean", https://hdl.handle.net/2014/36561, San Diego, California, USA, JPL Open Repository
No abstract provided |
Feb 21, 1993
Spjut, Won-Kyu, 1993, "A High Temperature Electrostatic Levitator for 1-g", https://hdl.handle.net/2014/35070, Denver, Colorado, USA, JPL Open Repository
No abstract provided |
Feb 20, 1993
Wilson, K. E.; Lesh, J. R.; Yan, T-Y., 1993, "GOPEX: A Laser Uplink to the Galileo Spacecraft on its Way to Jupiter", https://hdl.handle.net/2014/34844, Los Angeles, CA, JPL Open Repository
In the Galileo Optical Experiment (GOPEX), optical transmissions were beamed to the Galilieo spacecraft by Earth-based transmitters at Table Mountain Observatory (TMO), California, and Starfire Optical Range (SOR), New Mexico. The demonstration took place over an eight-day period... |
Feb 19, 1993
Lieske, J. H., 1993, "On the Conversion of Orbital Elements from 1950.0 to J2000", https://hdl.handle.net/2014/34956, Astronomy and Astrophysics, JPL Open Repository
Formulas are developed for the transformation of ecliptical orbital elements from |
Feb 17, 1993
Enright, Paul J., 1993, "Thrust Vector Control Algorithm Design for the Cassini Spacecraft", https://hdl.handle.net/2014/34920, Irvine, California, USA, JPL Open Repository
A preliminary design of the Cassini Thrust Vector Control algorithm which controls the spacecraft attitude during main engine burns is described. The discussion includes software architecture, sensor/actuator characteristics, and vehicle dynamics, as well as controller design and... |