| 摘要: |
| 为了提高DS/FH混合扩频信号的捕获速度, 提出了一种将DS/FH 信号中三维搜索转化为
二维搜索的快速捕获方案。通过对搜索过程的详细分析，推导出在单、双驻留条件下的平均
捕获时间数学表达式以及高斯信道下系统的检测性能计算公式。理论推导与仿真结
果表明：相对于传统的捕获方式，该方案有效地缩短了系统的平均捕获时间，具有更强的抗
噪性能，适用于存在较强噪声的复杂通信环境。 |
| 关键词: DS/FH混合扩频 二维搜索 平均捕获时间 抗噪性能 |
| DOI： |
|
| 基金项目:陕西省自然科学基金资助项目（2011JM8038） |
|
| A fast DS/FH hybrid spread spectrum signal acquisition scheme and its performance analysis |
| GE Hai-bo,LIU Fei,ZHOU Yan-e,WANG Song |
| () |
| Abstract: |
| To improve the acquisition performance of DS/FH system，a new method combining r
apid frequency identification with fast PN code acquisition algor
ithm is presented.With this acquisition method，the traditional 3D DS/F
H hybrid signal acquisition is converted to 2D acquisition,and the process of the s
cheme is analyzed. Theoretical deduction and simulation result show that compar
ed with traditional DS/FH hybrid signal acquisition scheme the mean acquisition time(MAT) of the
proposed scheme is effectively reduced,it has better anti-noise performance and
can be applied in complex communiction environment with existance of strong noise. |
| Key words: DS/FH hybrid spectrum spread 2D acquisition mean acquisition time anti-noise performance |
