摘要
检测概率是衡量星载船舶自动识别系统的重要指标。由于星载船舶自动识别系统覆盖范围很广,发送时隙冲突会导致接收信号检测概率降低。鉴于此,提出一种基于信号功率差的检测概率计算模型,利用此模型对不同的天线接收系统进行分析,并对建立星载船舶自动识别系统检测概率模型进行预估。仿真结果表明,在不进行实时解调的情况下,提出的基于功率差的检测概率算法较传统的检测概率算法更接近实际,能更好地反映星载船舶自动识别系统模型的检测概率性能。
The probability of detection is an important factor for the evaluation of satellite-based Automatic Identification System（AIS）.For satellite-based AIS covering a wide range of cell,there are detection probability problems with the received signal due to the time slot conflicts.A method for calculating detection probability is proposed,which is based on signal power difference model.The method is applied to different antenna receiving systems for performance analysis,and the model of detection probability is estimated for satellite-based AIS.The simulation results demonstrate that the proposed scheme is closer to practice than traditional algorithms without demodulating,and thus better reflects the probability detection performance of satellite-based AIS.
出处
《无线电通信技术》
2018年第2期114-118,共5页
Radio Communications Technology
基金
企
事业横向委托项目资助项目(A2015248)
