摘要
战术数据链中,时分多址接入(Time Division Multiple Access,TDMA)技术具有良好的抗截获和抗干扰能力,组网灵活,因此得到广泛应用。针对侦察TDMA系统时需要确定时隙头位置(即时隙首脉冲到达时间)的问题,在对TDMA系统结构和时隙结构进行分析的基础上,研究时隙结构中粗同步部分32个脉冲存在的固有跳频规律,通过仿真分析提出了基于该跳频规律的时隙头提取方法,在脉冲丢失概率较高的情况下对该方法进行了蒙特卡罗仿真测试,仿真结果验证了算法的有效性,从而为后续的时隙分析奠定基础。
TDMA has wide application in tactical data links in virtue of its good anti-interception,anti-jamming and flexible networking capabilities. Each slot＇s pulses can be divided into coarse synchronization,fine synchronization,header and message. By analyzing TDMA system structure and slot structure,the inherent frequency hopping pattern in thirty-two coarse synchronization pulses in timeslot structure. Based on simulation analysis,a timeslot header extraction method is put forward based on the frequency hopping pattern. This method is simulated and tested in the case of pulse lost. The simulation results show that this method is available and can lay a foundation for sequent timeslot analysis.
出处
《无线电通信技术》
2016年第1期43-45,50,共4页
Radio Communications Technology
关键词
TDMA
跳频图案
模板匹配
时隙头
TDMA
frequency hopping pattern
template match
timeslot header
