对超敏捷动中成像遥感卫星角速度快(6 (°)/s)、角加速度大(1.5 (°)/s2)、成像参数随时空复杂多变等新问题, 开展了超敏捷动中成像特点分析与成像参数仿真分析工作。构建了动中成像复杂模型, 精确分析了动中成像合速度的变化规律。在此基础上, 结合信噪比、调制传递函数(MTF)等计算公式, 全面分析了不同成像条件下, 动中成像系统的行频、TDI级数、姿态稳定度MTF、同步误差MTF、偏流修正误差MTF等随角速度的变化关系, 为超敏捷动中成像卫星, 尤其是卫星的成像电子学, 提供了重要的设计依据。

In view of the new features of super agile remote sensing satellites, including large angular velocity of 6(°)/s, large angular acceleration of 1.5(°)/s2, and the imaging parameters tending to change in different time and space, super agile maneuvering imaging characteristics were analyzed and imaging parameters were simulated. The variation of resultant velocity was precisely calculated based on the complicated model of maneuvering imaging. On this basis, together with the computational formula of SNR and MTF, the change of line rate, TDI stages, MTF of attitude stability, MTF of synchronization error, and MTF of drift error with the variation of the maneuvering angular velocity in different imaging conditions were comprehensively analyzed, which provides an important foundation for the design of super agile maneuvering imaging satellites, particularly for the imaging electronics of the satellites.