Memo 68 Dynamic range loss due to the retarded baseline effect
نویسنده
چکیده
In this memo we study the dynamic range loss for wide fields of view caused by unaccounted delay terms due to the retarded baseline effect. It is shown that the effect is quite strong for a 3000 km array (for a field of view as small as 1 " , the dynamic range is only). Most of this is due to the orbital motion of the Earth and is equivalent to the differential aberration. Although there is no information loss associated with the effect, taking it into account puts an additional stress on the imaging software.
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تاریخ انتشار 2005