针对如何提高天基光学监视对GEO目标的观测效率,开展了天基光学监视指向策略的研究。首先,对比分析了适合GEO带观测的几种天基光学监视轨道,并选择太阳同步晨昏轨道作为天基光学GEO目标观测轨道;其次,为充分利用光照条件并避免地影对GEO观测造成影响,分析了影响最佳指向角的2个因素———太阳矢量、轨道面法线矢量在地心惯性坐标系赤道面内的夹角和相机的视场角,并推导了最佳指向角的计算模型。最后,结合GEO目标的运动规律,提出了一种适合太阳同步晨昏轨道能够提高GEO目标观测效率的观测策略。 Aiming at how to improve the observation efficiency of spaceborne optical surveillance on the GEO targets, a space-based optical surveillance and pointing strategy has been developed. Firstly, several kinds of space-based optical orbitals suitable for GEO observations are compared and the sun-synchronous dusk orbits are selected as the orbital optical GEO target orbitals. Secondly, in order to make full use of the illumination conditions and avoid the influence of the shadow on the GEO observations, Two factors influencing the optimal pointing angle are analyzed. The angle between the sun vector and the normal vector of the orbital plane in the equatorial plane of the inertial coordinate of the earth’s center and the angle of view of the camera, and the calculation of the optimal steering angle is derived model. Finally, combined with the law of motion of the GEO target, a new observational strategy is proposed to adapt the sun-synchronous twilight orbit to improve the GEO target observation efficiency.