What Simulation Repeatability Means for Your Program

What Simulation Repeatability Means for Your Program

Why Simulation Repeatability Matters Given the same initial conditions, GNSS/INS simulations of the same mission scenario should produce the same result every time. Different results indicate a problem with the receiver. Or do they? Poor simulation repeatability can...
Tightly Coupled GNSS-INS Simulation

Tightly Coupled GNSS-INS Simulation

Global navigation satellite systems (GNSS) and inertial navigation systems (INS) are naturally complementing positioning and navigation technologies, because each one compensates for the other’s deficiencies. Therefore, as demand for reliable positioning and...
Top Military Simulating Issues

Top Military Simulating Issues

A recent article in IEEE Spectrum revealed and detailed a very alarming threat to airline safety posed by GPS tests conducted by the U.S. military. According to the article, military tests that jam GPS signals to test military defenses against such jamming are an...
Simulating Conditions on a Vessel at Sea

Simulating Conditions on a Vessel at Sea

For many applications, in addition to knowing a platform’s position it is nearly as important to know its attitude, which consists of three rotational components—roll, pitch, and yaw—and three linear ones—heave, surge, and sway. For example: for aerial photogrammetry,...