Research On Airborne DADS Atmospheric Parameters Fusion Technology

With the rapid development of aviation technology, the aircraft’s maneuverability, agility,capability of precision strike have gradually become important indicators of new generation aircraftsthat raises new problems and challenges for the accurate measurement of air data. The accuracy andreliability of ADS under different environment and flight conditions has important significance forhigh mobility, safety, performance of aircrafts. ADS/INS bidirectional data fusion research wascarried out to improve the overall performance of both without compromising the autonomy of eachsystem in this context.An INS/ADS airborne wind fusion method was designed. A EKF was designed to achieve thealgorithm and provide the high-precision wind information to new high-performance aircrafts, andoffer an important element for DADS reconfiguration.An ADS/INS/Dynamics inertial AOA fusion method was designed to solve the mutation error ofAOA measured by external AOA sensors in the transonic range. Highly autonomous inertialinformation and stable dynamics and atmospheric data were fused by Kalman filter to provide inertialAOA which was stable and changing gently in the transonic range.An ADS/INS altitude fusion method was designed to solve the fierce shake of pressure-altitudein the high AOA range. By disconnecting the passageway of atmospheric damp and using the pureINS data to correct the press-altitude error, it was able to improve the accuracy of the altitude data inflight. A barometer altitude error compensation algorithm was designed to compensate the barometeraltitude error caused by non-standard atmosphere when flying across regions. It can provide moreaccurate altitude to the aircrafts.A algorithm simulation platform for ADS/INS data fusion was proposed, the structure ofsimulation platform was designed, the availability of X-Plane in the simulation is analyzed. Theavailability of simulation platform was verified through the study of flight data. The simulationplatform played an important role in supporting the Airborne DADS atmospheric parameters fusiontechnology.