Investigation of the effect of repeat orbits on GRACE gravity recovery

dc.contributor.advisorBettadpur, Srinivas Viswanath, 1963-en
dc.contributor.committeeMemberTapley, Byron Den
dc.creatorPini, Alex Jamesen 2012en
dc.description.abstractThe Gravity Recovery and Climate Experiment (GRACE) has been orbiting the Earth and determining its gravity field since 2002. Throughout the course of the mission, the orbital elements occasionally change such that the satellites enter a repeat ground track configuration. Repeat ground tracks result in reduced spatial resolution of the satellites, which poses problems in the context of gravity recovery. The monthly gravity solutions during these periods are examined and shown to have lower quality than usual. The characteristics of these repeat period solutions are identified and compared to a period of uniform coverage to illustrate the ways in which the solutions are degraded. An investigation into the underlying physical and computational sources of these errors is also presented.en
dc.description.departmentAerospace Engineeringen
dc.subjectGravity recoveryen
dc.subjectGround tracken
dc.subjectRepeat orbiten
dc.subjectCenter for Space Researchen
dc.titleInvestigation of the effect of repeat orbits on GRACE gravity recoveryen