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In this paper, we introduce a procedure for the null broadening algorithm design with respect to the perturbation of the interference location. This method is based on maximizing the array output signal-to-interference-plus-noise-ratio (SINR) subject to quadratic constraints. The design problem can be cast as a fractional quadratically constrained quadratic programming (QCQP) problem that can be solved...
This paper mainly focus on the transmit and receive sensors joint selection problem of distributed MIMO radar in target tracking scienario. Beacause of the limited resources of radars, a subset of radars need to be selected in MIMO radar network at every intance while making the performance to its best. For that purpose, posterior cramer-rao lower bound (PRCLB) is introduced as the optimization criterion...
We develop a new efficient method for designing unimodular waveforms with good auto- and cross-correlation properties for multiple-input multiple-output (MIMO) radar. Our waveform design scheme is conducted based on minimization of the integrated sidelobe level of designed waveforms, which is formulated as a quartic non-convex optimization problem. We start from simplifying the quartic optimization...
In this paper, the waveform design for transmit beampattern synthesis is studied in MIMO radar systems with colocated antennas. The waveform transmitted at each antenna is defined as a weighted sum of a set of discrete prolate spheroidal (DPS) sequences which have good orthogonal and band-limited properties. Assume that different transmit antennas use the same set of DPS sequences, while the weighting...
The typical Sky-Wave Radar receive array require extensive leveling of the terrain in front of antenna for low side-lobe performance. This results in significant costs and may bring environmental crises. Thus, a special sparse array system is commonly adopted in this situation, which is able to avoid engineering cost problem by deploying the array elements only in the relative flat terrain and discarding...
Multiple Input Multiple Output (MIMO) radar can effectively improve radar performance by transmitting specially designed orthogonal signals. A novel algorithm is presented to design binary orthogonal code for MIMO radar system. The proposed algorithm employs the Walsh function to maintain the orthogonal property of signals. The binary orthogonal code set is obtained by executing synchronal random...
Recently there has been a surge of interest in waveform design for multiple-input multiple-output (MIMO) radar, and a great deal of efforts have been devoted to this topic. In this paper, we revisit an earlier examined MIMO radar waveform design problem which optimizes both minimum mean-square error estimation (MMSE) and mutual information (MI). We formulate a new waveform design problem and provide...
Revisiting an earlier examined multiple-input multiple-output (MIMO) radar waveform design problem which optimizes both minimum mean-square error estimation (MMSE) and mutual information (MI), we formulate a new waveform design problem and provide some further results in this paper, which complements the previous study. More specifically, we present an iterative optimization algorithm based on the...
The autocorrelation sidelobe peak (ASP) levels of discrete frequency-coding waveform with fixed frequency pulses (DFCW_FF) is very large. It is about 0.21 or -13.2dB. Replacing the fixed frequency pulses with linear FM pulses (LFM) can lower the ASP. We investigate theambiguity function (AF) and cross-AF for DFCW with arbitrary frequency firing order. It shows that DFCW_LFM have different AF expression...
For the element position synthesis of 2-dimension sparse rectangular arrays with the design constraints of the number of elements, the aperture and the minimum element spacing, an improved genetic algorithm (IGA) based on chromosome element resetting is presented in this paper. Compared with the synthesis method of thinned arrays, this new approach could exploit more degree of freedom of elements...
For the element position synthesis of 2-dimension sparse rectangular arrays with the design constraints of the number of elements, the aperture and the minimum element spacing, an improved genetic algorithm (IGA) based on chromosome element resetting is presented in this paper. Compared with the synthesis method of thinned arrays, this new approach could exploit more degree of freedom of elements...
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