| 摘要: |
| 分析了“北斗一号”信号强弱信号码自干扰对弱信号捕获所构成的影响，并将在GPS
中行之有效的一种连续干扰取消（SIC）方法应用于“北斗”。模拟及实测结果表明：强弱
信号强度相差高于15 dB时，“北斗一号”信号码自干扰已经不可忽视；当强弱信号强度相差超
过一定程度，弱信号会陷于完全的失捕或是误捕。采用SIC方法通过去除强信号解除码自干扰影响
，使强信号下弱信号捕获得以实现且效果明显。 |
| 关键词: “北斗一号” 正交干扰 软件接收机 连续干扰取消 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(41204031) |
|
| Mutual coupling effects analysis and solution of different channel COMPASS-1 signals |
| QU Jiang-hua,YUAN Hong,ZHANG Li |
| () |
| Abstract: |
| This paper presents an analysis of Kasami code cross-correlations, and
its impact on the acquisition of weak signals when coexisting with strong signa
ls. A SIC(Successive Interference Cancellation) method is introduced to mitigate
the interference to allow successful
acquisition of the weak signals. Test result shows that cross-correlation effec
t cannot be ignored when strong signals are 15dB higher than the weak signals. T
he higher cross-correlation may result in complete loss or false acquisition of
weak signals. Using SIC method, the weak COMPASS-1 signals can be captured suc
cessfully. |
| Key words: COMPASS-1 cross-correlation software receiver successive interference cancellation |
