空间相机地面实时动态集成测试技术

摘要

为了确保空间相机在轨长期、可靠工作,依据空间相机的系统结构和原理,提出了一种空间相机地面实时动态集成测试方法.采用自开发的星上载荷控制系统仿真设备、动态成像目标生成及模拟系统、主控系统仿真测试设备、CCD成像系统仿真测试设备、编码器仿真测试设备、热控仿真测试设备、电源监控系统和图像快视及数据记录系统等作为单元测试设备,应用卫星同步时钟和时钟同步采集卡,实现分布式仿真测试设备的精确时钟同步.以仿真调度控制服务器作为集成测试的控制核心,建立了集成运算模型、集成测试方法和网络实时动态集成测试工作平台.通过0.06(°)/s恒速运动调偏流角试验,验证了集成测试技术的有效性,连续拍摄到的动态目标调整图像倾斜小于0.01°.%Based on system structures and principles of some space cameras , an integration dynamic detection method is proposed to operate space cameras in long-term and reliability on the orbit. A space camera testing unit is proposed,which is composed of own multi-simulated testing apparatus, such as SATL load control, dynamic image generator, space camera controller, CCD imaging system, encoder system, thermal control system, power control system and image data displaying and recording system. These apparatus are synchronized accurately using a SATL synchronous clock and a clock sampling device. Using a simulated integration detection control server as the core,a integration operation model, integration testing method and a working platform based on web dynamic integration are built. The integration detection technology is verified by an example of camera drift angle dynamic adjustment experiment in a movement speed of 0. 06(°)/s and obtained imaging max lean is less than 0. 01°.