Airborne pulsed Doppler radar detection of low-altitude windshear—A signal processing problem
1991; Elsevier BV; Volume: 1; Issue: 4 Linguagem: Inglês
10.1016/1051-2004(91)90112-x
ISSN1095-4333
Autores Tópico(s)Atmospheric aerosols and clouds
ResumoThe airborne pulse Doppler radar will undoubtly be a part of the solution to the problem of detecting LAWS. There are limitations of a single frequency radar, particularly in detecting turbulence over a wide range of reflectivity varying turbulence over a wide thunderstorms. It would seem that the ultimate system will involve a sensor suite including Lidar and FLIR detectors, which tend to complement the radar. A key will be in designing the signal processing to provide a reliable integrated remote sensor. It seems apparent that use of expert system technology will be needed as is being used with the new generation ground systems. Certainly one of the more significant unsolved problems is how to certify such a system. It is difficult to define precisely what constitutes hazardous windshear. It is even more difficult to evaluate detection and false alarm rates. Microbrust events are rare enough to suggest that simulation will play a significant role in this evaluation. A further problem, which is perhaps of related interest to the signal processor, is flight guidance for recovery from microburst windshear. Ongoing research [46] has as an objective, performance evaluation of various strategies for recovery from windshear encountered during the approach-to-landing, including the benefit of forward looking sensors.
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