By P. Lacomme, J.C. Marchais, J.P. Hardange, E. Normant
This new name presents a entire account of the present nation of the most kinds of airborne and spaceborne radar platforms. every one approach is roofed by way of the fundamental radar ideas, features and homes, in addition to the radar's function in the total procedure and venture. Given altering operational standards, the authors additionally think about how radar could evolve into the long run. The booklet merits from the information of the writer group, who're operating in an organization thought of to be a centre of excellence for advertisement radar improvement.
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Extra info for Air and Spaceborne Radar Systems An Introduction
Sample text
Given its extreme sensitivity to this configuration, RCS is presumed to be an unpredictable variable macroscopically characterized by various parameters such as the following: • • • • mean value standard deviation distribution function autocorrelation /DFRPPH5DGDUERRN 3DJH 0RQGD\ )HEUXDU\ 30 28 Part I — General Principles For practical reasons (contractual commitments on range capability), radar experts have established four models of typical targets: Swerling Model I Target fluctuation is of Rayleigh type.
Swerling Model III The target fluctuates in accordance with the function σ 4σ −2 p(σ ) = 2 e σ σ with decorrelation from one scan to the next (the case of a target with a single dominant scatterer). Swerling Model IV Target fluctuation is the same as in Model III but with decorrelation from pulse to pulse. 6 shows real aircraft RCS measurements in S band. 5 Mathematical Modeling of the Received Signal The power of the received signal is not sufficient to define the optimal processing required for its detection, and we must determine the mathematical expression of this signal.
1 Carriers This book is concerned only with platforms that can be equipped with radar. In a military context, these platforms include the following: • • • • • • satellites aircraft helicopters active homing head missiles (seekers) Unmanned Air Vehicles (UAV) smart munitions With regard to civilian platforms, only the first three are relevant to this study. 2 Weapons A wide and ever-increasing range of aeronautical weapons has been developed: • • • • • • • • • • guns rockets conventional bombs (smooth, braked, anti-runway) laser-guided missiles or bombs Air-to-Air missiles Air-to-Ground missiles Air-to-Sea missiles cruise missiles lethal UAVs etc.