By P. Lacomme, J. C. Marchais, J. P. Hardange, E. Normant
This new identify offers a accomplished account of the present country of the most sorts of airborne and spaceborne radar platforms. every one approach is roofed by way of the elemental radar rules, services and homes, in addition to the radar's function in the total method and challenge. Given altering operational specifications, the authors additionally ponder how radar may perhaps evolve into the longer term. The e-book merits from the data of the writer staff, who're operating in an organization thought of to be a centre of excellence for advertisement radar development.
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Additional info for Air and Spaceborne Radar Systems (Radar, Sonar, Navigation and Avionics Series)
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.
The difference signal is no longer in phase with the sum signal. 11 Angular Glint The fluctuation in direction of a complex target caused by target noise is known as glint. Glint greatly reduces angular tracking accuracy of this type of target. 1 Introduction Immediately after the introduction of radar, it became clear that the power of the received signal did not always obey the radar equation as described in Chapter 3. In some cases the signal was far weaker than predicted by the equation, and in others it was much stronger, producing spectacular detection ranges.
8) such that Σ 6$ 6 % and ∆ 6$ ± 6% . The angular difference measurement is given by the following equation: ∆ Σ⋅∆ ---------- Σ ( * $ ( α )6 ± * % ( α )6 ) ( * $ ( α )6 * % ( α )6 ) --------------------------------------------------------------------------------------------------- * $ ( α )6 * % ( α )6 *$ ( α ) ± *% ( α ) -------------------------------------* $ ( α ) *% ( α ) This equation is based exclusively on the direction of arrival, α (angular difference with respect to the axis), and the patterns GA(α) and GB(α).
Air and Spaceborne Radar Systems (Radar, Sonar, Navigation and Avionics Series) by P. Lacomme, J. C. Marchais, J. P. Hardange, E. Normant