Ay Albedosu Etkisinde Güneş’e Yönelme Vektörü Kestirimi

Uzay araçları veya üzerindeki aletler görevlerini başarılı bir şekilde sürdürmek ve tamamlamak için belirli yönlere veya noktalara yönlendirilmektedirler. Güneş sensörleri, güneş sistemindeki hem gezegen etrafında seyreden uydularda hem de gezegenler arası uzay görevlerinde kullanılabildiğinden tercih edilmektedirler. Bunlardan birçoğu yalnızca güneşten gelen radyasyonu değil yakınındaki herhangi bir objenin albedosunu da ölçmektedir. Bu ölçümlerin, yönelim belirleme ve kontrol bilgisayarında, albedo modelinin dikkate alınmadan kullanılması durumunda hataya sebep olduğu bilinmektedir. Bu çalışmada, Ay albedosunun güneş sensörü ve güneşe yönelme vektörü kestirimi üzerindeki etkisi farklı benzetimler üzerinden değerlendirilmiştir.

Sun-Direction Estimation under the Effect of Lunar Albedo

Spacecraft or the instruments are directed to certain directions or points in order to successfully complete their mission. Solar sensors are commonly used as they are capable of being used in planetary or interplanetary space missions in the solar system. Mostly, these instruments sense not only the radiation from the sun but also the albedo of any nearby object. These measurements are known to cause erroneous outputs in the attitude and control system when used without considering the albedo model. In this study, the effect of the lunar albedo on the sun sensor and sun direction estimation is evaluated under different simulation conditions.

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