面阵静态红外地球敏感器电激励信号源设计研究

Research of electrical excitation signal source design for static array infrared earth sensor

基于面阵红外地球敏感器在桌面联试及半物理仿真测试中的需要,文中设计一种电激励信号源来模拟卫星在不同姿态下面阵红外地球敏感器检测到的地平圆位置,通过上位机软件发送姿态信息至电激励信号生成装置,经过FPGA作为红外地球敏感器的输入,验证红外地球敏感器的性能指标,完成面阵红外地球敏感器的闭环测试。试验验证表明,该装置能够模拟地平圆的不同位置,在面阵红外地球敏感器的桌面联试及半物理仿真测试中发挥重要作用。

Based on the needs of array infrared earth sensor’s desktop joint test and semi physical simulation test,an electric excitation signal source is designed in this paper to simulate the position of the earth detected by the array infrared earth sensor. The attitude information is sent to the electrical excitation device through the upper computer software. After the analysis of the FPGA module,the simulated ground circle is drawn,and the analog ground circle is superposed with the signal of the detector as the input of the infrared earth sensor to verify the performance index of infrared earth sensor and complete the closed loop test. The experimental verification showed that the device can simulate the different positions of the ground circle,and played an important role in the desktop test and semi physical simulation test.