Multi-GNSS, Multi-Frequency Simulator: GPS standard, new (L2C, L5) GLONASS, Galileo simulation.SBAS simulation: WAAS (N. America), EGNOS (Europe), GAGAN (India), MSAS (Japan). Testing of military SAASM receivers and high-end survey grade civillian receivers. Test of simulated movements (user trajectories). Test of receivers’ sensitivity to loss of satellites, multi-path, leap seconds, and atmospheric conditions. Fast production test of sensitivity and positioning receivers’ accuracy (conducted or over-the-air). Test of timing receiver accuracy. Test of receivers’ dynamic range. Test of receivers’ susceptibility for noise (SNR limit testing). Test of leap second transition.