By Keith D. Ward
Sea muddle: Scattering, the K-Distribution and Radar functionality offers an authoritative account of our present figuring out of radar sea litter. The authors pay specific realization to the compound okay distribution version, which they've got constructed during the last twenty years. facts assisting this version, together with a close evaluation of the calculation of EM scattering via the ocean floor, its statistical formula, and useful software to the specification, layout and assessment of radar platforms are all mentioned. The calculation of the functionality of sensible radar platforms is gifted in enough aspect for the reader with the intention to take on similar issues of self assurance.
This e-book can be helpful to expert radar engineers and educational researchers, and of substantial curiosity to the broader utilized physics and arithmetic communities.
Target Detection by way of Marine Radar - ISBN 9780863413599 Low-angle Radar Land litter - ISBN 9780852962305
The establishment of Engineering and know-how is among the world's top specialist societies for the engineering and know-how group. The IET publishes greater than a hundred new titles each year; a wealthy mixture of books, journals and magazines with a again catalogue of greater than 350 books in 18 various topic parts together with:
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Additional resources for Sea Clutter: Scattering, the K Distribution And Radar Performance
1 the stated wind speed produces the stated wave height with the fetch and duration shown. 2. When modelling or predicting radar performance it is very important to agree what scale of measurement is being used. Assessing the environment in an actual radar trial is notoriously difficult and the sea state estimated by observers often shows a wide variation. Wave-rider buoys are used to estimate local wave height but these only give a rough guide to the likely clutter characteristics, which also depend on such things as ‘wind friction velocity’, ‘wave age’ and other factors discussed in Chapter 3.
7. These indicate how the clutter structure is dependent on radar polarisation, sea state and grazing angle. 2 m). The grazing angle is 1◦ . 8(b), where the sea condition is rougher (sea state 4, significant wave height 2 m) and the radar is looking upwind, we find that in the latter the wave pattern is more pronounced and the polarisation change has less effect on the clutter. 8(c), shows both vertical and horizontal polarisation with large spikes of a few seconds duration giving the dominant return.
They have similar radar cross-sections for VV and HH polarisations due to the diffuse scattering from very rough surfaces. 10, which employed pulse-to-pulse frequency agility. The plots show two examples of returns from single range cells; the time histories of simultaneous returns from VV and HH are compared. 14(a), the overall behaviour of the two polarisations is similar. However, the detailed structure is different, indicating that different scatterers are contributing. This is an example of whitecap scattering.