基于FPGA和PCIe总线的电子星模拟器设计

Design Of Electronic Star Simulator Based On FPGA And PCIe

摘要:

为了实现卫星姿轨控地面半物理仿真试验，设计了基于FPGA和PCIe总线的电子星模拟器，图像分辨率支持1024*1024；图像位宽支持12bit。电子星模拟器图像处理卡基于FPGA的硬件结构，与上位机界面软件通过PCIe总线交互数据，采用LVDS(Low Voltage Differential Signaling)信号收发星图数据。地面动力学按照10ms周期将四元数通过以太网发送给电子星模拟器，电子星模拟器将生成的电子星图通过LVDS传输给星敏感器，通过地面实时仿真验证系统验证，电子星模的输出与目标值误差小于0.07%，闭环测试中星敏采集到准确的星图，显示了电子星模拟器的可行性，在卫星姿轨控地面半物理仿真试验中具有良好的推广性。

Abstract:

In order to realize the ground semi physical simulation test of satellite attitude and orbit control, an electronic satellite simulator based on FPGA and PCIe bus is designed, and the image resolution supports 1024 * 1024; The image bit width supports 12bit. Based on the hardware structure of FPGA, the image processing card of electronic star simulator interacts with the upper computer interface software through PCIe bus, and uses LVDS (low voltage differential signaling) signal to transmit and receive star map data. The ground dynamics sends the quaternion to the electronic star simulator through Ethernet according to the 10ms cycle. The electronic star simulator transmits the generated electronic star map to the star sensor through LVDS. It is verified by the ground real-time simulation verification system that the error between the output of the electronic star model and the target value is less than 0.07%. The star sensitivity collects the accurate star map in the closed-loop test, which shows the feasibility of the electronic star simulator, It has good generalization in the ground semi physical simulation test of satellite attitude and orbit control.