In general, observations are normally considered to refer to an epoch in time, however, observations take time. During this time span
temporal variations of the observable alias the measurement. Similar phenomenon can be defined in the space domain as well: data treated
to refer to a geographical location often contains integrated information of the surroundings. In each case the appropriate signal content
can partially be recovered by desmoothing the averaged data. The presentation introduces a desmoothing method, presents its use on
different applications in geodesy, and suggests its applicability for astronomical purposes.
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