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As the dramatic development of the electronic technology, many of the traditional radar system has been threaten in the modern war. Therefore, we need new technology to overcome all these kinds of problems. The phase array radar is a good solution to all these problems. The phase array radar is constructed of many antenna elements and each antenna element has its own phase shifter. However, the phase...
Provides an abstract of the presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings.
In this paper a new conformal array antenna of conical structure has been proposed. A conical phased array antenna can steer the radar beam electronically in both azimuth and elevation to cover a hemi-sphere mesh surrounding the radar antenna. Beam steering can be accomplished either continuously or discretely at definite directions. The proposed technique not only overcomes the limitations of mechanical...
Phased arrays offer possibilities of having multifunctional radar on a carrier such as an aircraft, etc. large uniform planar arrays require a large number of antennas and occupy a large area on the platform and is thus expensive in terms of hardware. Increasing the inter-element spacing to reduce the hardware requirement gives rise to grating lobes in the radiation pattern. Optimizing the inter-element...
Multi beam antenna arrays are extensively used for 3D surveillance radar, providing a shaped beam in elevation and multiple beams in receive. Semi active multibeam antenna system employs 18 TR modules in elevation, feeding 18 linear arrays. The TR modules feed the 18 linear arrays in uniform amplitude and with required phase distribution in elevation to form the shaped beam and also steers the stack...
The estimation of wave parameters using polarization sensitive arrays is addressed. Diversely polarized antennas are used, e.g. in radar and communication systems. A seismic application is presented. The wave parameters are estimated using a broadband maximum likelihood estimation procedure. To determine the maximum likelihood estimates, a complicated optimization problem has to be solved. The genetic...
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