Flight test track test technology based on BDS/GPS system
This paper describes a GPS-based double-difference carrier phase measurement model used in flight tests.During the flight test,the attitude change of the aircraft and the change of the flight environment have seriously affected the accuracy and reliability of the GPS test.Thus,this paper proposes a flight test fusion measurement method based the system that combines Beidou and GPS and establish a double difference model,the measurement data of Beidou Ⅲ is introduced into the existing difference model.Moreover,this paper verifies the validity of the model by simulating the research results.Through carrier phase measurement and double differential measurement based on the system that combines Beidou and GPS,it can be found that the measurement error is reduced significantly,the geometric distribution is more optimized,and the accuracy and reliability of the flight test track test are improved greatly.The problem of missing navigation data of fourth-generation aircraft under extreme flight test conditions is improved and the conditions for navigation data measurement in complex flight test environment are created.
NETL
NSTL
万方数据
维普
