双Dwell PN码捕获算法分析及仿真

Double Dwell PN Code Acquisition Algorithm Analysis and Simulation

无线通信在现代指挥控制体系中扮演着越来越重要的角色。提出双最大时间间隔(Dwell)PN码捕获算法,有效地解决了传统的PN码捕获技术在频率选择性衰落信道中恶化的问题,仿真比较了双Dwell算法与传统的差动捕获算法两种算法在检测概率、虚警概率和平均捕获时间等方面的性能,结果表明在相同硬件和信噪比条件下双Dwell算法具有更优越的性能。

Wireless communication plays the more and more important role in modern command and control systems. Performance of conventional PN acquisition algorithms deteriorates when they are used in a fading channel. In this paper Double Dwell PN acquisition algorithm was proposed to improve that performance in the frequency-selective fading channel. Performances between Double Dwell algorithm and conventional differential PN acquisition algorithm in detecting probability, false-alarm probability and mean capture time were compared in simulation. Results show that the new algorithm outperforms the conventional differential algorithms under the same SNR and hardware condition.