【摘要】 本文设计了一款可输出一字线型的星载线型激光器，该激光器可用于合成孔径雷达天线阵列面热变形的在轨测量。通过消热结构设计和抗力学设计，该激光器可满足空间应用的抗力学和热真空环境的要求，其在4.5 m内光线宽度不超过3 mm，连续工作5 min的指向变化小于25μrad，可在0～30℃范围内正常工作。所设计的激光器具有平面度高、覆盖范围大、稳定性高等特点，为今后大尺寸结构变形在轨测量提供了新的技术参考。更多还原

【Abstract】 This article presents the design of a spaceborne line laser capable of projecting a single line shape for in-orbit measurement of thermal deformations on the surfaces of synthetic aperture radar antenna arrays. The laser incorporates a heat dissipation structure and adheres to resistance theory, making it suitable for the rigorous thermal vacuum environments encountered in space. Its beam width remains under 3 mm at a distance of 4. 5 m, and the directional shift following continuous operation for 5 min is less than 25 μrad. Functioning effectively within a temperature range of 0-30 ℃, the laser exhibits high flatness, broad coverage, and remarkable stability. This design offers a novel technical reference for future in-orbit measurements of large-scale structural deformations.更多还原