Abstract:

In order to resolve the problem that the airborne differential global positioning system (DGPS) efficiency cannot be measured and assessed in the whole high dynamic hardware-in-loop (HIL) simulation of aircraft indoors, but only can be simulated partly or test-fly outdoors, a system how to evaluate the whole dynamic DGPS adapting real-time kinematic (RTK) in the static HIL simulation condition is brought forward on the basis of real-time simulation technology by adopting a GPS simulator and a DGPS receiver. The test data in the two different modes have been achieved by using the assessment system. The results show that the position precision of DGPS is 4~5 times higher than that of the single GPS. The system can simulate the whole outdoor flytest condition of the airborne DGPS and realize assessments for airborne DGPS efficiency in the static laboratory. The method proves to be effective in practice and provides a kind of indoor evaluation system for airborne DGPS efficiency in future.