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Airborne doppler radar detection of low altitude windshear
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Britt, Charles L. Jones, William R. Bracalente, Emedio M. |
| Copyright Year | 1990 |
| Description | As part of an integrated windshear program, the Federal Aviation Administration, jointly with NASA, is sponsoring a research effort to develop airborne sensor technology for the detection of low altitude windshear during aircraft take-off and landing. One sensor being considered is microwave Doppler radar operating at X-band or above. Using a Microburst/Clutter/Radar simulation program, a preliminary feasibility study was conducted to assess the performance of Doppler radars for this application. Preliminary results from this study are presented. Analysis show, that using bin-to-bin Automatic Gain Control (AGC), clutter filtering, limited detection range, and suitable antenna tilt management, windshear from a wet microburst can be accurately detected 10 to 65 seconds (.75 to 5 km) in front of the aircraft. Although a performance improvement can be obtained at higher frequency, the baseline X-band system that was simulated detected the presence of a windshear hazard for the dry microburst. Although this study indicates the feasibility of using an airborne Doppler radar to detect low altitude microburst windshear, further detailed studies, including future flight experiments, will be required to completely characterize the capabilities and limitations. |
| File Size | 877512 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910002376 |
| Archival Resource Key | ark:/13960/t91886k2f |
| Language | English |
| Publisher Date | 1990-07-01 |
| Access Restriction | Open |
| Subject Keyword | Air Transportation And Safety Flight Tests Aircraft Safety Microbursts Meteorology Aircraft Landing Superhigh Frequencies Takeoff Clutter Airborne Surveillance Radar Attitude Inclination Airborne Equipment Simulation Low Altitude Radar Detection Pulse Doppler Radar Feasibility Detection Wind Shear Microwaves Automatic Gain Control Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
