We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
A Low-Cost System for Measuring Horizontal Winds from Single-Engine Aircraft.
- Authors
Conley, Stephen A.; Faloona, Ian C.; Lenschow, Donald H.; Karion, Anna; Sweeney, Colm
- Abstract
The implementation and accuracy of a low-rate (~1 Hz) horizontal wind measurement system is described for a fixed-wing aircraft without modification to the airframe. The system is based on a global positioning system (GPS) compass that provides aircraft heading and a ground-referenced velocity, which, when subtracted from the standard true airspeed, provides estimates of the horizontal wind velocity. A series of tests was performed flying 'L'-shaped patterns above the boundary layer, where the winds were assumed to be horizontally homogeneous over the area bounded by the flight (approximately 25 km2). Four headings were flown at each altitude at a constant airspeed. Scaling corrections for both heading and airspeed were found by minimizing the variance in the 1-s wind measurements; an upper limit to the error was then computed by calculating the variance of the corrected wind measurements on each of the four headings. A typical uncertainty found in this manner tends to be less than 0.2 m s−1. The measurement system described herein is inexpensive and relatively easy to implement on single-engine aircraft.
- Subjects
WIND measurement; WIND speed measurement; AIRPLANE motors; AIRPLANE wings; AIRFRAMES; GLOBAL Positioning System; ARTIFICIAL satellites in navigation; METEOROLOGICAL instruments
- Publication
Journal of Atmospheric & Oceanic Technology, 2014, Vol 31, Issue 6, p1312
- ISSN
0739-0572
- Publication type
Article
- DOI
10.1175/JTECH-D-13-00143.1