الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This thesis is devoted to study the performance of multiple input multiple output (MIMO) radar with collocated antennas called Phased MIMO radar. In this study, the transmit array will be partitioned into a number of sub-arrays that are allowed to overlap. Each sub-array transmits an orthogonal waveform to other sub-arrays. Compared to the phased-array radar, the use of MIMO radar with co-located antennas enables improving angular resolution, increasing the upper limit on the number of detectable targets, extending the array aperture. The tradeoff of this technique with different partitioning schemes is simulated using Matlab program environment for the corresponding beam pattern and signal-to-interference-plus-noise ratios (SINRs) expressions.Also, a new Phased- MIMO radar with frequency diversity was proposed which offers a tradeoff between main-to-side lobe levels and antenna directivity. This technique can exploit frequency diversity which is applied between subarray adjacent elements and between adjacent subarrays. The total beam pattern is an optimum case of the lowest side lobes level as phased-MIMO radar but with higher directivity.Finally, a two-dimensional phased-MIMO radar array which is called planar-phased-MIMO radar was considered. This new technique aggregates the advantages of the linear-phased-MIMO radar without sacrificing either the main advantage of the planar-phased-array radar, which is the coherent processing gain, or the main advantage of the planar MIMO array radar, which is the diversity processing gain. Substantial improvements is offered by the proposed planar-phased-MIMO radar technique with respect to the linear-phased-MIMO, planar-MIMO and planar-phased-array radar techniques. The achieved improvements are demonstrated analytically and by simulations through analyzing the corresponding beampatterns, the resultant peak side lobe level, mean side lobe level, and directivity. Both analytical and simulation results validate the effectiveness of the proposed planar-phased-MIMO radar.