Kalman Filtering Of Gps Data In The Flight Test

Since airplanes became practical, navigation had been considered as a basic function for task execution and flight safeguard. Among various kinds of navigation technique. Global Position System (GPS) absorbs more and more concentration in military and civil application area. This article discusses an arithmetic method in GPS data process, and applies it in our helicopter flight experiments.We treated the GPS data by Kalman filter to improve the position precision, and the result is adopted to deal with ADF and Doppler Navigation System precision estimating. The software is developed under the environment of Visual C+ + 6.0 for enterprise edition.With this data process system, the flight experiments results of data treatment are greatly improved.