| 摘要: |
| 在码分多址（CDMA）的多无人机扩频测控链路中，多址干扰（MAI）是多目标系统需考虑的重要因素。在此类系统中，针对抗多址干扰的要求，设计具有相应互相关性能的扩频码是首要任务。从多无人机对抗多址能力的需求入手，分析了码速率、用户个数以及码的互相关性能对抗多址干扰能力的影响，得出了Kasami码型互相关性较好、序列部分相关会降低互相关性能的结论。仿真结果验证了理论分析的正确性。 |
| 关键词: 多无人机测控 码分多址 扩频 多址干扰 互相关性 |
| DOI： |
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| 基金项目: |
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| Spread spectrum code analysis of multi-UAV TT&C spread spectrum link |
| RAO Jun |
| (Southwest China Institute of Electronic Technology, Chengdu 610036, China) |
| Abstract: |
| In Code Division Multiple Access(CDMA) multi-UAV TT&C spread spectrum link,Multiple Access Interference(MAI) is an important factor to be considered in multi-target system in which the first task is to design spread spectrum code with cross correlation according to the anti-MAI requirement.Starting with the requirement of UAV for anti-MAI capability,this paper analyzes the effect of such factor as spread spectrum rate,number of users, and cross correlation on anti-MAI performance,draws the conclusion that the Kasami code has good cross correlation and the sequence partial correlation can reduce the cross correlation performance.Simulation result verifies the theoretical analysis. |
| Key words: multi-UAV TT&C;code division multiple access(CDMA) spread spectrum multiple access interference(MAI) cross correlation |
