By Alexey Nekrasov
ISBN-10: 3319006207
ISBN-13: 9783319006208
ISBN-10: 3319006215
ISBN-13: 9783319006215
The ‘wind vector’ – wind velocity and course – is a primary meteorological volume and suitable for air-sea trade methods. This booklet explores using a number of airborne microwave tools, a few of that are a part of common airplane gear, in opting for the neighborhood wind vector over water. this is often necessary as neighborhood wind info is mostly purely to be had at measurements websites like climate stations and airports, and international wind details from satellites has very coarse answer and terrible temporal assurance – at so much a couple of times day-by-day. In his e-book, Nekrasov makes use of recognized ends up in a unique approach and offers specific and application-oriented descriptions tips to also retrieve neighborhood wind details from commonplace airborne microwave tools. the consequences offered listed below are hugely invaluable for flight operation above the ocean (e.g., search-and-rescue) but additionally for complementing different measurements of atmospheric or oceanic parameters in the course of study flights.
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Additional info for Foundations for Innovative Application of Airborne Radars: Measuring the Water Surface Backscattering Signature and Wind
Example text
Nevertheless, the AWR always is a multifunctional system that provides earth surface surveillance and weather observation. Usually, weather radar should at least enable to detect clouds and precipitation, select zones of meteorological danger, and show radar image of surface in the map mode. AWRs or multimode radars with a weather mode are usually nose mounted. Most AWRs operate in either X- or C-band (Kayton and Fried 1997). The k-4 dependence of weather formations on carrier wavelength k favors X-band radar for their detecting.
At medium incidence angle, at least three or four NRCS values obtained from considerably different azimuth directions may be quite enough to measure the wind vector over water by the scatterometer method (Nekrassov 1997). Thus, it is desirable that the azimuth scanning sector of the AWR should be as wide as possible for measuring the wind vector over water by intensity of reflected signal. Unfortunately, not all AWRs have the azimuth scanning sector of ±90 or wider (up to ±100 ), and consequently, this feature should be taken into account when developing measurement algorithms and performing wind measurements.
Wieley, New York, p 773 Li L, Heymsfield G, Carswell J, Schaubert D, McLinden M, Vega M, Perrine M (2011) Development of the NASA high-altitude imaging wind and rain airborne profiler. In: Proceedings of Aerospace Conference, Big Sky, MT, 5–12 Mar 2011, pp 1–8 Mamayev VY, Sinyakov AN, Petrov KK, Gorbunov DA (2002) Air navigation and elements of navigation calculations. GUAP, Saint Petersburg, Russia, p 256, in Russian Masuko H, Okamoto K, Shimada M, Niwa S (1986) Measurement of microwave backscattering signatures of the ocean surface using X band and Ka band airborne scatterometers.
Foundations for Innovative Application of Airborne Radars: Measuring the Water Surface Backscattering Signature and Wind by Alexey Nekrasov
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