DocumentCode :
1440477
Title :
Wind Estimation and Airspeed Calibration using a UAV with a Single-Antenna GPS Receiver and Pitot Tube
Author :
Cho, Am ; Kim, Jihoon ; Lee, Sanghyo ; Kee, Changdon
Author_Institution :
Sch. of Mech. & Aerosp. Eng., Seoul Nat. Univ., Seoul, South Korea
Volume :
47
Issue :
1
fYear :
2011
fDate :
1/1/2011 12:00:00 AM
Firstpage :
109
Lastpage :
117
Abstract :
This paper proposes a method that uses an aircraft with a single-antenna GPS receiver and Pitot tube to estimate wind speed and direction and to calibrate the airspeed. This sensor combination alone does not determine the true attitude of the aircraft, so the wind parameters cannot be obtained directly from the measurements. However, if the aircraft flies at different headings, such as in banking turns or circle maneuvers, the wind magnitude and direction can be estimated from the geometrical relation between the wind and the measurements. An extended Kalman filter (EKF) is applied to estimate wind parameters. The EKF can also estimate the scaling factor used to convert dynamic pressure to airspeed. This is useful for the operation of small unmanned aerial vehicles (UAVs) because of difficulty in determining the airspeed scaling factor of a low-cost UAV. Simulations are performed for a constant 2-D wind. To test the effectiveness of the proposed method, flight tests of a small UAV are conducted. Simulations and flight test results show that the proposed method is effective.
Keywords :
Global Positioning System; Kalman filters; aircraft antennas; aircraft instrumentation; aircraft testing; calibration; mobile robots; parameter estimation; radio receivers; remotely operated vehicles; sensors; velocity measurement; EKF; Pitot tube; UAV; aircraft; airspeed calibration; airspeed scaling factor; extended Kalman filter; flight testing; global positioning system; sensor; single-antenna GPS receiver; unmanned aerial vehicle; wind parameter estimation; wind speed estimation; Aerodynamics; Aircraft; Global Positioning System; Receivers; Unmanned aerial vehicles; Wind speed;
fLanguage :
English
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9251
Type :
jour
DOI :
10.1109/TAES.2011.5705663
Filename :
5705663
Link To Document :
بازگشت