Preentry communication design elements for outer planets atmospheric entry probe

Details Preentry communication design elements for outer planets atmospheric entry probe Preentry communication design elements for outer planets atmospheric entry probe

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7714296.&link_type=abstract

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Atmospheric Entry, Data Links, Equipment Specifications, Jupiter Probes, Spacecraft Communication, Computer Aided Design, Interplanetary Trajectories, Mission Planning, Parameterization, Spacecraft Antennas

Scientific paper

Four related tasks are discussed for data transmission from a probe prior to entering the atmosphere of Jupiter to an orbiting spacecraft in a trajectory past the planet: (1) link analysis and design; (2) system conceptual design; (3) Doppler measurement analysis; and (4) an electronically despun antenna. For tasks 1, 3, and 4, an analytical approach was developed and combined with computational capability available to produce quantitative results corresponding to requirements and constraints given by NASA, ARC. One constraint having a major impact on the numerical results of the link analysis was the assumption of a nonsteerable antenna on a spinning orbiter. Other constraints included the interplanetary trajectory and the approach trajectory. Because the Jupiter Orbiter Probe (JOP) program is currently in a state of evolution, all requirements and constraints applied during this study are subject to change. However, the relationships of parameters as developed will remain valid and will aid in planning Jupiter missions.

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