Many space programs have come to rely on global positioning as a key navigation system component for accurate positioning in space and for altitude determination. Simulation and test of spacecraft is now a key element of the design and qualification of any space program. Establishing performance prior to launch is absolutely critical to avoid costly mistakes; trial and error testing is simply not an option. It is therefore essential to incorporate trustworthy and verified simulation tools when designing, deploying or using Global Navigation Satellite Systems (GNSS).

Spirent has established its high performance test systems as the product of choice for many of the worlds leading Space Agencies and space related companies when simulating the performance of space based GNSS, (GPS, Galileo and GLONASS systems). Spirent Galileo simulators are widely recognized, and have been used as a test standard for demanding projects such as the implementation, in-orbit validation and verification of the ground mission segment and test user segment receivers of the Galileo system.

Spirent systems include facilities to cater to the special needs of space-based receiver testing. These include:

• Full account for the double atmosphere effect of signals passing through the atmosphere twice from GPS satellites on the far side of the Earth
• Space vehicle models to allow full mission testing

Spirent systems are used by space agencies across the world. Full mission testing is completed on the simulator to ensure integrity and accuracy under a variety of challenging conditions. Spirent systems are also deployed as an element of advanced space mission simulators, utilizing the remote control and data streaming capabilities of the Spirent simulator.

Spirent’s GPS, Galileo, GLONASS, SBAS simulators cover L1, L2, L5, E5, E6 frequencies and simulator software capabilities includes multiple features specifically developed to meet the specialist needs of the space community.