基于协同战术识别的双机编队威胁评估方法

双机组成编队采用协同战术攻击目标是多机协同空战的一种主要形式。针对蓝方为双机编队的超视距空战威胁评估问题,提出了一种基于协同战术识别的威胁评估方法。首先,根据双机编队协同战术的分析、双机的空间占位与机动特性信息,采用动态贝叶斯网络建立目标双机编队协同战术识别模型。然后,根据目标飞行状态信息和目标机动动作识别结果,进行目标轨迹预测。最后,综合空间占位、探测、攻击、协同战术等威胁因子,考虑目标轨迹变化对战场态势演变的影响,建立威胁评估模型。仿真结果表明,所提方法能够准确识别双机编队的协同战术,实现合理化威胁评估。

Analysis on design principles of GPS and Galileo signal structure

Signal structure is one of the decisive factors for satellite navigation systems and is one of the key technologies which must be resolved during system design and upgrading process.This paper studies design principles of the foreign advanced satellite navigation signal structure and summarizes the latest results of the GPS and Galileo signal structure design.By describing the evolution of satellite navigation signals,modern global navigation satellite systems(GNSS) signal design methods are introduced in six aspects including frequency structure design,code rate selection,signal waveform design,spreading code design,data rate selection and channel coding design.Based on these design concepts,the GNSS signal structure development direction is presented.