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Phased-MIMO Radar: A Tradeoff Between Phased-Array and MIMO Radars | | Aboulnasr Hassanien
; Sergiy A. Vorobyov
; | | Date: |
15 Aug 2009 | | Abstract: | We propose a new technique for multiple-input multiple-output (MIMO) radar
with colocated antennas which we call phased-MIMO radar. The new technique
enjoys the advantages of MIMO radar without sacrificing the main advantage of
phased-array radar which is the coherent processing gain at the transmitting
side. The essence of the proposed technique is to partition the transmitting
array into a number of subarrays that are allowed to overlap. Then, each
subarray is used to coherently transmit a waveform which is orthogonal to the
waveforms transmitted by other subarrays. Coherent processing gain can be
achieved by designing a weight vector for each subarray to form a beam towards
a certain direction in space. Moreover, the subarrays are combined jointly to
form a MIMO radar resulting in higher resolution capabilities. The substantial
improvements offered by the proposed phased-MIMO radar technique as compared to
previous techniques are demonstrated analytically and by simulations through
analysis of the corresponding beampatterns and achievable output
signal-to-noise-plus-interference ratios. Both analytical and simulation
results validate the effectiveness of the proposed phased-MIMO radar. | | Source: | arXiv, 0908.2153 | | Services: | Forum | Review | PDF | Favorites | |
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