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Receiver Placement in Passive MIMO Radar Systems
, M.Sc. Thesis Sharif University of Technology ; Nayebi, Mohammad Mahdi (Supervisor) ; Behnia, Fereidoon (Supervisor)
Abstract
There are a wide variety of radar systems that one of them is MIMO Radars. After a spark in communication in 1998 that developed MIMO communication, recently there has been a great attention towards MIMO radar systems. Researchers have studied this topic from several points of view. Generally, MIMO radar systems are divided into two categories: MIMO radars widely separated antennas and MIMO radars with collocated antennas. One of the important issues of widely separated MIMO radars, is the placement manner of receivers in the geometrical area. This radar’s performance is very dependent to placement of the antennas, because the performance is dependent to relative position of...
Optimum Detector and Power Allocation of MIMO Radar Systems
, M.Sc. Thesis Sharif University of Technology ; Nayebi, Mohammad Mehdi (Supervisor) ; Behnia, Fereidoon (Co-Advisor)
Abstract
MIMO (Multi Input Multi Output) Radars issue is a new topic in Radar systems field and power allocation in these systems is very important to improve their performance.In this thesis, at first, two optimum detectors for MIMO radars with widely separated antennas are designed. In the first one, received signal in all receivers is gathered in a central processor and centralized detection is performed. This type of detection needs too much process power and is complex. Because of complexity of detector, probability of detection is very difficult to derive and deflection criterion is used for evaluating system performance. In the second one, each receiver processes received signals from all...
Optimum Tradeoff Between Multiplexing and Diversity Gains in Widely Separated MIMO Radars
, Ph.D. Dissertation Sharif University of Technology ; Bastani, Mohammad Hasan (Supervisor)
Abstract
There are a wide variety of radar systems that one of them is MIMO Radars. After a spark in communication in 1998 that developed MIMO communication, recently there has been a great attention towards MIMO radar systems. MIMO radars divided into co-located and widely separated branch. In this thesis, the spatial diversity and multiplexing gain and the tradeoff between them in MIMO communication and MIMO radar systems investigated. Diversity and multiplexing gains in communication defined analytically, so diversity and multiplexing gain presented as detection probability improvement and throughput or capacity improvement respectively. Also tradeoff between these two gains investigated...
Joint detector & estimator design for widely separated MIMO radars
, Article 2016 IEEE Radar Methods and Systems Workshop, RMSW 2016 - Proceedings, 27 September 2016 through 28 September 2016 ; 2016 , Pages 136-140 ; 9781509010493 (ISBN) ; Nayebi, M. M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2016
Abstract
This paper considers the detector design and performance analysis in a widely separated multiple input - multiple output (S-MIMO) radar. We studied this subject under some assumptions such as single point target, Swerling models for radar cross section and Gaussian interference. The target is moving in piecewise linear trajectory and multi-scan data is stored. So, the target cell maybe changed through the time. A GLRT detector is derived that employs all data at once in a central unit. The performance of detector is extracted and numerical simulations verify all results