跳频电台互调干扰估计的蒙特卡罗方法研究

发布时间：2019-08-08 16:36

【摘要】：在战场条件下,密集的用频装备之间所产生的互调干扰会造成信号严重失真,影响指挥通信控制系统(C3)的正常运转。针对电子战仿真环境中工作在VHF频段战场跳频电台之间的互调干扰问题,分析了互调干扰发生的时间、频率和功率条件,以及跳频电台随机位置和阴影效应的影响。研究了决定互调干扰概率的3个条件概率:两个及以上活跃信道的概率、活跃信道中信号频率满足互调干扰频率条件的概率和信号功率满足互调干扰功率条件的概率。在此基础上提出了基于蒙特卡罗方法的战场环境下跳频电台的互调干扰概率估计算法,并分别针对2路、3路信号的3阶互调干扰的仿真结果进行了仿真验证。仿真结果表明,提出的战场环境下跳频电台互调干扰概率估计方法,可以有效地对互调干扰概率进行估计,估计结果对于战场环境的电子战仿真以及战场的作战指挥具有一定的指导和借鉴意义。
[Abstract]:In the field of battlefield, the intermodulation interference generated between the intensive frequency-frequency equipment can cause severe distortion of the signal and influence the normal operation of the command communication control system (C3). The time, frequency and power condition of the intermodulation interference, as well as the influence of the random position and the shadow effect of the frequency-hopping radio station, are analyzed. The probability of the two or more active channels is studied, and the probability of the signal frequency in the active channel satisfying the intermodulation interference frequency condition and the probability of the signal power meeting the intermodulation interference power condition are studied. Based on this, an algorithm for estimating the intermodulation interference probability of the frequency hopping radio station based on the Monte-Carlo method is proposed, and the simulation results of the 3-order intermodulation interference of the two-way and three-way signals are simulated and verified respectively. The simulation results show that the method for estimating the intermodulation interference probability of the frequency-hopping radio station under the battlefield environment can effectively estimate the probability of the intermodulation interference, and the estimation result has certain guidance and reference for the electronic warfare simulation of the battlefield environment and the combat command of the battlefield.
【作者单位】：西北工业大学无人机特种技术重点实验室;
【分类号】：TN924

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