| 1. | Based on analysis on the generation mechanisms of auto - correlation peaks , acm is combined with average technique in correlation domain . average technique not only smoothes noise correlation lines , but also makes all potential positions of generating auto - correlation peaks generate auto - correlation peaks of dsss / bpsk signal . the improved acm obtain lower snr limitation successfully
在分析时域自相关法相关峰出现机理的基础上,将该法与相关域迭加平均技术结合,既平滑了噪声又使各延迟时间为扩频码整数倍周期处均出现相关峰,实现了更低信噪比下的码周期估计。 |
