摘要
本文提出一种应用投影法复值估计［１］在低中频直接采样中处理带通信号的方法。这种方法可以利用较少的采样数据，得到高精度的复值估计，从而实现对带通信号的相干检测。这种算法的计算量小，因而可以构成实时系统。计算机模拟的结果证明了这种高精度的信号处理方法是完全可行的。
This paper presents a method of digital detection of bandpass signal in low intermediae frequency (IF) using projection approach. With a few samples of a bandpass signal, the coherent detection of the bandpass signal complex envelope can be obtained with high accuracy. The computation demand of the method is small, so the real time processing can be made by employing such a type of ASIC as TMS320 series DSP. The result of computer simulation has proved the realizability of this highly precise signal processing method. [WT5”HZ〗
出处
《系统工程与电子技术》
EI
CSCD
1998年第3期12-14,43,共4页
Systems Engineering and Electronics
关键词
信号处理
投影
算法
信噪比
Projection approach, Coherent detection, Complex estimation, IF sampling.
