Aircraft velocity determination using GLONASS data

In the article, the velocity of the Cessna 172 aircraft was determined during an in-flight test conducted around the EPDE military airport in Dęblin, Poland. The velocity parameter was determined on the basis of the aircraft motion dynamics equations in the GNSS navigation system. Target parameters of the Cessna 172 in-flight velocity along the particular axes of the XYZ geocentric frame were determined based on the navigation solution in the GLONASS satellite system. Numerical calculations concerning the Cessna 172 aircraft velocity were performed in the RTKLIB (RTKPOST module) program package The maximum values of the in-flight velocity components (Vx, Vy, Vz) for the Cessna 172 aircraft do not exceed the level of ± 62 m/s. Moreover, the resultant value of the total in-flight velocity of the Cessna 172 does not exceed the level of 75 m/s. The work has also brought up the problem of reliability of determining the inflight velocity of the Cessna 172 aircraft from the GLONASS solution against the background of the readings from the GPS sensor.