论文部分内容阅读
针对风云二号卫星上的自旋扫描地球敏感器进行整机实验的需求,提出了一种新型便携式双目地球模拟器。介绍了模拟器的系统组成、总体结构和工作原理,着重对关键技术进行了论述,分别叙述了地球弦宽和辐射亮度的计算过程;热地球和光学调制器的设计过程。测试结果表明:温度控制精度达到0.10℃,调制频率控制精度达到0.1 Hz,采用模拟器对敏感器进行了仿真实验,其输出信号与在外太空的工作状态波形基本吻合。
Aiming at the demand of the whole experiment of the spin-scan earth sensor on the FY-2 satellite, a new type of portable binocular earth simulator is proposed. The system components, overall structure and working principle of the simulator are introduced. The key technologies are discussed emphatically. The calculation process of the width and radiance of the earth is described separately. The design process of the thermal earth and the optical modulator is described. The test results show that the temperature control accuracy reaches 0.10 ℃, and the modulation frequency control accuracy reaches 0.1 Hz. The simulator is used to simulate the sensor. The output signal is in good agreement with the working state waveform in outer space.