A Signal Simulation Facility for GNSS Receiver Design and Testing

拟议的设施包括一个全球导航卫星系统(GNSS)射频信号模拟器，该模拟器允许在不同情况下对新的信号跟踪和导航解决方案算法进行实验室测试。模拟当前和未来的全球定位系统卫星以及新的欧洲全球导航卫星系统“伽利略”的运行情况，对于测试新的接收器设计至关重要。例如，可以对该设施进行编程，以产生在信号路径中具有用户可选择的物理变化的GPS卫星信号，包括存在射频干扰源、高度大气干扰、绕射效应和多径。由于许多信号变化是罕见和/或不可预测的，因此信号模拟器是执行此类测试的唯一手段。

The proposed Facility comprises a Global Navigation Satellite System (GNSS) RF Signal Simulator which allows laboratory testing of new signal tracking and navigation solution algorithms, under different scenarios. Simulation of the operation of current and future GPS satellites, and of the new European GNSS "Galileo", is vital for testing new receiver designs. For example, the Facility could be programmed to generate a GPS satellite signal with user-selectable physical variations in the signal path, including the presence of RF jamming sources, high atmospheric disturbances, diffraction effects and multipath. As many of the signal variations are rare and/or unpredictable, the Signal Simulator is the only means to carry out such tests.