Phased-MIMO Radar: A Tradeoff Between Phased-Array and MIMO Radars

被引：367

作者：

Hassanien, Aboulnasr ^{[1
]}

Vorobyov, Sergiy A. ^{[1
]}

机构：

[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2010年 / 58卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Coherent processing gain; MIMO radar; phased-array radar; transmit/receive beamforming; TRANSMIT DIVERSITY; DESIGN;

D O I：

10.1109/TSP.2010.2043976

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 the MIMO radar without sacrificing the main advantage of the phased-array radar which is the coherent processing gain at the transmitting side. The essence of the proposed technique is to partition the transmit 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 angular resolution capabilities. Substantial improvements offered by the proposed phased-MIMO radar technique as compared to the phased-array and MIMO radar techniques are demonstrated analytically and by simulations through analyzing the corresponding beampat-terns and the achievable output signal-to-noise-plus-interference ratios. Both analytical and simulation results validate the effectiveness of the proposed phased-MIMO radar.

引用

页码：3137 / 3151

页数：15

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