环境减灾二号A/B卫星红外相机摆扫行周期设计及影响分析

Line Cycle Design and Impact Analysis of Whisk-broom Imaging for HJ-2A/B Satellites’Infrared Camera

针对环境减灾二号A/B卫星宽幅摆扫式光学遥感相机的行周期设计,文章建立了结合卫星轨道数据和相机设计指标的搭接率计算模型,并经环境减灾二号A/B卫星上的红外相机设计指标进行了仿真分析,同时结合卫星红外相机在轨获取的图像数据质量进行了统计,对模型的影响进行了分析和验证。结果表明:提出的搭接率仿真模型得到的结果与卫星在轨实测结果一致性良好,且卫星红外相机在轨获取图像的搭接率指标正常,可以满足后续处理和用户使用要求。该模型可以有效用于扫描式光学遥感相机指标设计中,分析结果也可为后续相关航天遥感相机设计提供参考。

For the line cycle design of wide-field whisk-broom remote sensing camera,an overlapping ratio model combined with satellite orbit data and camera specification is built.The design specification correction of HJ-2A/B satellites’infrared camera is simulated and analyzed.The quality of HJ-2A/B satellites image data,as well as verifying the model is analyzed.As a result,the data,simulated by the proposed overlapping ratio model,has good compatibility with on-orbit data,and the overlapping ratio indices of images captured by HJ-2A/B satellites in orbit are all fit the appliance requirements.Therefore,this overlapping model can be effectively used in the design work of whisk-broom remote sensing cameras,and the analysis results can provide reference frame for astronautical camera project.