A method of waveform design based on mutual information

doi:10.1007/s11460-009-0035-9

Front Elect Electr Eng Chin

2009, Vol. 4

Issue (2) : 134-140 https://doi.org/10.1007/s11460-009-0035-9

RESEARCH ARTICLE

A method of waveform design based on mutual information

Bo JIU(

), Hongwei LIU, Liya LI, Shunjun WU

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

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Abstract

A novel method called the general water-filling, which is suitable when clutter is not negligible, is proposed to solve the waveform design problem of broadband radar for the recognition of multiple extended targets. The uncertainty of the target’s radar signatures is decreased via maximizing the mutual information between a random extended target and the received signal. Then, the general water-filling method is employed to the waveform design problem for multiple extended targets identification to increase the separability of multiple targets. Experimental results evaluated the efficiency of the proposed method. Compared to chirp signal and water-filling signal, our method improves the classification rates and even performs better at low signal-to-interference-plus-noise ratio (SINR).

Keywords waveform design broadband radar mutual information target recognition

Corresponding Author(s): JIU Bo,Email:bojiu@mail.xidian.edu.cn

Issue Date: 05 June 2009

Cite this article:

Bo JIU,Hongwei LIU,Liya LI, et al. A method of waveform design based on mutual information[J]. Front Elect Electr Eng Chin, 2009, 4(2): 134-140.

URL:

https://academic.hep.com.cn/fee/EN/10.1007/s11460-009-0035-9
https://academic.hep.com.cn/fee/EN/Y2009/V4/I2/134

Fig.1 Simplified transmit-receiver model of essential features.

Fig.2 PSD of noise

Fig.3 PSD of clutter

Fig.4 Spectral variance of target frequency response

Fig.5 PSD of the waveform optimized by GWF

Fig.6 Comparison of three transmitted signals

Fig.7 PSD of waveform optimized by GWF

Tab.1 Recognition rates of three transmitted signals with energy /%

Tab.2 Recognition rates of three transmitted signals with energy/%

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