کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5486653 1399471 2017 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of GPS antenna phase center and code residual variation maps on orbit and baseline determination of GRACE
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Impact of GPS antenna phase center and code residual variation maps on orbit and baseline determination of GRACE
چکیده انگلیسی
For high-precision relative POD which necessitates DD carrier-phase ambiguity fixing, in principle frequency-dependent PCV maps would be required. To this aim, use is made of an Extended Kalman Filter (EKF) that is capable of optimizing relative spacecraft dynamics and iteratively fixing the DD carrier-phase ambiguities. It is found that PCV maps significantly improve the baseline solution. CRV maps slightly enhance the baseline precision, more significantly they lead to a much better initialization of the ambiguity fixing. The GRACE single-satellite orbit solutions compare to within a few cm 3-dimensionally with state-of-the-art external orbit solutions and SLR observations, whereas for the baseline a consistency of better than 0.7 mm with KBR observations is achieved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 59, Issue 12, 15 June 2017, Pages 2987-3002
نویسندگان
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