A test equipment for the navigation receivers of space vehicles

There is a variant of test equipment building for global navigation satellite system (GNSS) receivers, which are being contained in the navigation system of space vehicle. Software of navigation signal simulator of simultaneously four GNSS (GLONASS, GPS, Galileo and BDS) has been developed. Vector signal generator is used as hardware. By means of real-time digital oscilloscope and special software for navigation signals analysis, accuracy research of signal delay changing law reproducing has been performed.