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首页> 外文期刊>Acta geodaetica et geophysica Hungarica >The effect of geopotential perturbations of GOCE on its observations - A numerical study
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The effect of geopotential perturbations of GOCE on its observations - A numerical study

机译:GOCE的地势摄动对其观测的影响-数值研究

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摘要

In solution of gradiometric boundary value problem in space a regular grid of satellite gravity gradiometry data is required. This grid is considered on a sphere with radius of the mean Earth sphere and altitude of satellite. However, the gravitational gradients are measured by a gradiometer mounted on GOCE satellite and orbital perturbations of the satellite influence GOCE observations as well. In this study we present that these effects are about 2 E on GOCE data. Also numerical studies on the gravitational gradients in orbital frame show that the perturbations of co-latitude are more significant than that of inclination. The effect of perturbed inclination is less than -9 mE while the effect of perturbed co-latitude is within -173 mE in one day revolution of GOCE.
机译:为了解决空间中的梯度边界值问题,需要卫星重力梯度数据的规则网格。该网格被认为是一个具有平均地球球半径和卫星高度的球体。但是,重力梯度是通过安装在GOCE卫星上的梯度计测量的,并且卫星的轨道扰动也会影响GOCE的观测结果。在这项研究中,我们认为这些效应对GOCE数据的影响约为2E。对轨道框架中引力梯度的数值研究还表明,同纬度的扰动比倾角的扰动更重要。 GOCE旋转一周后,摄动倾角的影响小于-9 mE,而共纬度的扰动在-173 mE以内。

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