Hanqing Ding

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Recognition of wobbling and nutating cone-shaped targets is a major challenge in space target recognition area. In this paper, we develop a signal model of multiple scattering centers on the wobbling and nutating cone-shaped targets, analyze the micro-Doppler characteristics of their echo. It is concluded that the micro-Doppler features have remarkable(More)
In cognitive radio (CR) systems, secondary users (SUs) have to detect channel periodically during their data transmission to decide whether the channel is idle in order to avoid unacceptable interferences to primary users (Pus). With the traditional spectrum sensing method, all secondary users must carry out the detection process on the spectrum band before(More)
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