An attitude determination algorithm is developed using two synchronous sate-llites, this algorithm transformed observation into the form which can be solved by algorithm QUEST.

• 提出一种基于优化方法的双星定姿算法 ,将载波相位观测作了适当的变形 ,得到适用于基于向量观测的姿态确定算法的问题形式 ,然后采用QUEST算法求解姿态。