کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1714263 1519936 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mars solar conjunction prediction modeling
ترجمه فارسی عنوان
مدل سازی پیش بینی رابطه خورشیدی مریخ
کلمات کلیدی
رابطه خورشیدی مریخ؛ خط روش تقاطع؛ زاویه SEP؛ MOM
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی


• A mathematical model is described to predict Mars solar conjunction.
• Model is simulated for the Mar Orbiter Mission.
• Mathematical model can be utilized to predict Mars superior conjunction for any Mars orbiting spacecraft.

During the Mars solar conjunction, telecommunication and tracking between the spacecraft and the Earth degrades significantly. The radio signal degradation depends on the angular separation between the Sun, Earth and probe (SEP), the signal frequency band and the solar activity. All radiometric tracking data types display increased noise and signatures for smaller SEP angles. Due to scintillation, telemetry frame errors increase significantly when solar elongation becomes small enough. This degradation in telemetry data return starts at solar elongation angles of around 5° at S-band, around 2° at X-band and about 1° at Ka-band. This paper presents a mathematical model for predicting Mars superior solar conjunction for any Mars orbiting spacecraft. The described model is simulated for the Mars Orbiter Mission which experienced Mars solar conjunction during May–July 2015. Such a model may be useful to flight projects and design engineers in the planning of Mars solar conjunction operational scenarios.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 118, January–February 2016, Pages 246–250
نویسندگان
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