Based on good correlation and randomness of chaotic sequences, and complexity of double chaotic sequences, this paper proposes a MIMO radar signal model. Inside a sub-pulse, continuous frequency modulation is used with a single Bernouli chaotic map, which can resist interference of Gaussian noise. Between sub-pulses, phase modulation is used with double chaos map, i.e., Logistic and Tent. To analyze the signal model, the signal’s expression is discretized and deduced in detail. The expressions of average ambiguity function and frequency spectrum are derived. Average fuzzy characteristics and orthogonality of the signal waveforms are analyzed in theory. Numerical simulation shows the signal model with good orthogonality and reliability In this paper.
WANG Jia-jia, XIE Ya-nan, TAN Zi-miao
. Frequency-Modulated and Phase-Modulated Orthogonal Waveform Design for MIMO Radar Based on Chaotic Map[J]. Journal of Applied Sciences, 2014
, 32(6)
: 588
-595
.
DOI: 10.3969/j.issn.0255-8297.2014.06.007
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