Journal of Applied Sciences ›› 2014, Vol. 32 ›› Issue (6): 588-595.doi: 10.3969/j.issn.0255-8297.2014.06.007

• Signal and Information Processing • Previous Articles     Next Articles

Frequency-Modulated and Phase-Modulated Orthogonal Waveform Design for MIMO Radar Based on Chaotic Map

WANG Jia-jia, XIE Ya-nan, TAN Zi-miao   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2014-01-11 Revised:2014-05-09 Online:2014-11-28 Published:2014-05-09

Abstract:  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.

Key words:  MIMO radar, single-double chaotic map, frequency-modulation and phase-modulation, orthogonal waveform design

CLC Number: