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MIMO Radar Ambiguity Properties and Optimization Using Frequency-Hopping Waveforms

Chen, Chun-Yang and Vaidyanathan, P. P. (2008) MIMO Radar Ambiguity Properties and Optimization Using Frequency-Hopping Waveforms. IEEE Transactions on Signal Processing, 56 (12). pp. 5926-5936. ISSN 1053-587X. doi:10.1109/TSP.2008.929658.

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The concept of multiple-input multiple-output (MIMO) radars has drawn considerable attention recently. Unlike the traditional single-input multiple-output (SIMO) radar which emits coherent waveforms to form a focused beam, the MIMO radar can transmit orthogonal (or incoherent) waveforms. These waveforms can be used to increase the system spatial resolution. The waveforms also affect the range and Doppler resolution. In traditional (SIMO) radars, the ambiguity function of the transmitted pulse characterizes the compromise between range and Doppler resolutions. It is a major tool for studying and analyzing radar signals. Recently, the idea of ambiguity function has been extended to the case of MIMO radar. In this paper, some mathematical properties of the MIMO radar ambiguity function are first derived. These properties provide some insights into the MIMO radar waveform design. Then a new algorithm for designing the orthogonal frequency-hopping waveforms is proposed. This algorithm reduces the sidelobes in the corresponding MIMO radar ambiguity function and makes the energy of the ambiguity function spread evenly in the range and angular dimensions.

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Vaidyanathan, P. P.0000-0003-3003-7042
Additional Information:© Copyright 2008 IEEE. Reprinted with permission. Manuscript received February 04, 2008; revised July 20, 2008. First published August 19, 2008; current version published November 19, 2008. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Chong-Meng Samson See. This work was supported in parts by the ONR Grant N00014-06-1-0011, and the California Institute of Technology, Pasadena.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-06-1-0011
Subject Keywords:Ambiguity function; frequency-hopping codes; linear frequency modulation (LFM); MIMO radar; simulated annealing; waveform design
Issue or Number:12
Record Number:CaltechAUTHORS:CHEieeetsp08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12860
Deposited By: Archive Administrator
Deposited On:07 Jan 2009 20:27
Last Modified:08 Nov 2021 22:33

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