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A Method for Designing Low Peak to Average Power Cognitive Radar Waveform

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Abstract:

In this paper, the basis function of TDCS system (Transform Domain Communication System) is used to design cognitive radar transmitter waveform. Based on the noise environment, the waveform can be adjusted adaptively. Then after clipping to reduce the PAPR (Peak to Average Power Ratio) of radar echo signal, the obtained signal is used as the next launch of the radar signal. The cognitive radar transmitter requires a nonlinear waveform to improve the efficiency of radar transmitter power amplifier, so reducing the PAPR of signal is essential. This paper presents the gray complementary sequence is applied to TDCS communication systems, and then it needs to reduce PAPR of signals by clipping. Proven, PAPR of the transmitted signal is maintained at about 3.25dB, and the signal has a low probability of intercept, high anti-interference ability and distant target detection range.

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Periodical:

Applied Mechanics and Materials (Volumes 716-717)

Pages:

1055-1059

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.716-717.1055

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Cite this paper

Online since:

December 2014

Authors:

Xue Mei Wang*, Chun Yang Wang, Yu Chen, Yan Xin Yu, Hong Yan Sun

Keywords:

Clipping, Cognitive Radar, Gray Complementary Sequences, PAPR Reduction, TDCS

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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