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提出了基于深空探测器对太空中的目标天体合影成像的新策略。首先,基于相机的性能参数建立视场模型,然后对天体和探测器轨道动力学模型、探测器姿态数据以及光照条件进行综合分析,最终确定了拍摄用相机以及成像时刻与成像姿态等成像策略。以探月三期月地高速再入返回飞行任务的设计为例,研究计算了对地月合影的拍摄相机、成像时刻与成像姿态,并利用在轨探测效果仿真系统进行了仿真验证。结果表明:该成像策略能够根据预定的天体合影的构图要求便捷地计算出拍摄条件,结果准确、角度偏差在1°范围内。该成像策略还成功应用于探月三期月地高速再入返回飞行器的实际任务中,在距离月球1.40×104 km和距离地球3.91×105 km处,获得了我国航天史上首张地月合影图像,为后续深空探测器在轨天体合影提供了参考依据。
A new strategy based on deep space probe for imaging target celestial bodies in space is proposed. Firstly, the visual field model was established based on the performance parameters of the camera. Then the kinematics model of the celestial body and the orbit, the attitude data of the detector and the illumination conditions were comprehensively analyzed. Finally, the imaging strategy of the camera and the imaging moment and imaging pose were finally determined. Taking the design of the high-speed reentry and return mission of three lunar exploration lunar phases as an example, the shooting camera, the imaging moment and the imaging gesture of taking pictures of the earth and moon were studied and calculated, and the simulation was carried out by using the on-orbit detection effect simulation system. The results show that the imaging strategy can easily calculate the shooting conditions according to the composition of the predetermined celestial body and the result is accurate and the angle deviation is within 1 °. The imaging strategy has also been successfully applied to the actual mission of returning to the aircraft at high speed in three months of lunar exploration. At the distance of 1.40 × 104 km from the moon and 3.91 × 105 km from the earth, , Providing a reference for follow-up deep space exploration of celestial bodies on orbit.