摘要
在研究背景噪声和目标信号不同特性的基础上提出一种实用的非合作微弱信号盲检测技术。对新的检测技术进行理论分析和算法流程的阐述。并针对复杂电磁环境下多信号检测的性能和低信噪比环境下单信号检测性能进行仿真与分析。表明新的检测方法在高斯白噪声信道下对不同的无线信号都有较好的检测和估计精度,而且具有运算量小、精度高、易于硬件实现的特点。
This paper presents a practical blind non-cooperation weak signal detection technology based on research of different features of background noise and target signal, and makes theoretical analysis for new detection technology and describes algorithm process. The simulation and analysis are done for multi-signal detection performance in complex EM environment and single-signal detection performance in low SNR environment. The simulation results show that the new detection method can be used to obtain better detection and estimation accuracy for different wireless signals in white Ganssian noise channel, and has such features as low computational complexity, high precision and easy-to-hardware implementation.
出处
《计算机与网络》
2010年第13期40-42,共3页
Computer & Network
关键词
微弱信号
盲检测
功率分布函数
功率谱
weak signal
blind detection
power distribution function
power spectrum
