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DEFCON 30模拟器代码解剖：轨道运动与射频传播的交互前两篇分别解决了两个问题：卫星在哪里（第4篇），以及干扰能不能压住上行（第5篇）。但这两个问题是分开算的——第4篇只画轨道，第5篇只用固定距离。真正要做干扰仿真，必须把这两件事耦合起来：每个时刻算一次卫星位置，每个位置算一次链路预算，然后看SINR怎么随时间变。DEFCON 30的satellite-jamming-simulator就是这么做的。它的README写得很清楚：“The underlying model is a simple calculation of Free Space Path Loss on the basis of distance between two isotropic antennas: one aboard the spacecraft and the other located on the Earth’s surface. Both the jammer and defender are assumed to be operating in the same frequency and no protocol-level implementation is simulated.”“Orbits are propagated using recent data from the Celestrak satellite catalog and the SGP4 implementatio 【太空电子战】DEFCON 30模拟器代码解剖：轨道运动与射频传播的交互
DEFCON 30模拟器代码解剖：轨道运动与射频传播的交互前两篇分别解决了两个问题：卫星在哪里（第4篇），以及干扰能不能压住上行（第5篇）。但这两个问题是分开算的——第4篇只画轨道，第5篇只用固定距离。真正要做干扰仿真，必须把这两件事耦合起来：每个时刻算一次卫星位置，每个位置算一次链路预算，然后看SINR怎么随时间变。DEFCON 30的satellite-jamming-simulator就是这么做的。它的README写得很清楚：“The underlying model is a simple calculation of Free Space Path Loss on the basis of distance between two isotropic antennas: one aboard the spacecraft and the other located on the Earth’s surface. Both the jammer and defender are assumed to be operating in the same frequency and no protocol-level implementation is simulated.”“Orbits are propagated using recent data from the Celestrak satellite catalog and the SGP4 implementatio