gravity gradient

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Noun1.gravity gradient - a gradient in the gravitational forces acting on different parts of a nonspherical object; "the gravity gradient of the moon causes the ocean tides on Earth"
gradient - a graded change in the magnitude of some physical quantity or dimension
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However, as the large quantity of data makes the computational cost of this process prohibitive, an alternative method is to utilize GOCE gravity gradient data to improve existing gravity field models that have been derived from other kinds of observations.
The control concepts developed by Herther, Malcomson, and Covinginton during their internships at Doc's Instrumentation Lab would eventually become the foundation for the ascent guidance and three-axis passive gravity gradient on--orbit stabilization used on the Lockheed Agena spacecraft that carried CORONA's photographic capsule.
The correlation between the gravity correction and height or gravity gradient was further investigated.
The gravity gradient disturbance is [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], where [micro] is the gravitational parameter of the Earth, a is the semimajor axis of the orbit, and [C.sub.k] is the direction cosine matrix in terms of quaternions.
Gravity gradient Error L2 Error L2 tensor components 1-GPU (SP) 4-GPU (SP) [G.sub.zz] 0.0310 0.0310 [G.sub.xx] 0.0385 0.0385 [G.sub.yy] 0.0392 0.0392 [G.sub.xy] 0.0743 0.0743 [G.sub.xz] 0.3085 0.3085 [G.sub.zz] 0.3148 0.3148
If there is a linear regional gravity gradient, as is the case here, polynomial method can be a good approach to the regional-residual separation process.
the anomaly or the gravity residual as it is called, between the Newtonian prediction and the measured below-earth gravity gradient. Taking the difference between (12) and (14), assuming the same unknown value of [G.sub.N] in both, we obtain an expression for the gravity residual
The measurement procedure also allowed a determination of the gravity gradient, which was -0.000003 [s.sup.-2].
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