By Kronig R.
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Additional info for A Theorem on Space Quantization
It is known as amplitude monopulse. 9; this is phase monopulse. 10). Note: If the received signal is a jammer signal transmitted by the target, the angular measurement made on the jamming signal is the same as for the useful target. This is one of the major advantages of monopulse angular difference, which enables, in any case, the direction of the jammed target to be known if the jammer is carried by the target itself. 4 is constant. The antenna monopulse angular difference measures the perpendicular to the equiphase surface.
This requires a very good knowledge of the platform velocity, which is given either by a high- performance inertial unit (coupled to GPS) or by specific radar modes that give a high-accuracy measurement of the platform velocity from ground Doppler velocity estimation. After the weapon is released, it is necessary to evaluate the result of the strike. This damage assessment can be performed with a high-resolution SAR imaging mode. 1 Carriers This book is concerned only with platforms that can be equipped with radar.
In the X- and Ku-bands, and above, this phenomenon assumes major importance. It imposes an upper limit on the frequency band used for any given application. /DFRPPH5DGDUERRN 3DJH 0RQGD\ )HEUXDU\ 30 46 Part I — General Principles Chapter 1 showed how choosing a high frequency helps increase antenna gain. A trade-off must be reached based on the desired application: • • • • For ground-based radars or air-surveillance radars on large platforms, you can use large antenna. You can therefore stay in S- or L-band (10 or 23 cm), especially as the long range increases the chances of encountering rain or fog.