摘要
在低信噪比条件下,谱图-Radon变换可以有效地检测多个线性调频信号,但是当多个线性调频信号能量相差很大吋,强信号的平台会将弱信号的峰值淹没,谱图-Radon变换就很难同时将这多个线性调频信号检测出来。本文提出了基于谱图-Radon变换二值积累的方法,这种方法可以有效的检测出被强信号平台掩盖的弱信号,具有较大的实用价值,仿真实验结果表明这种算法是有效的。
The Spectrogram-Radon transform can effectively detect several LFM signals in low Signal- Noise Ratio （SNR） environment. However, when the energy of these LFM signals diverges greatly, it is quite difficult to detect all LFM signals with the Spectrogram-Radon transform at the same time, because the platform of strong signals will cover weak signals. In this paper, a signal detection method based on Spectrogram and binary integration in Radon transform parameter space is proposed. By using this method, strong signals as well as the weak signals covered by the strong signals could be detected simultaneously. It means that this method has high practicable value. Simulation results verify the effectiveness of this method.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2006年第1期69-71,共3页
Journal of Astronautics
基金
全国优秀博士论文作者专项资金(200237)
