对于空中的飞行体而言,需要了解彼此间位置、速度和航向等空间状态信息。空间状态信息一般可以通过外界导航与定位支持系统来获取,如GPS和INS等,但这些外界导航系统存在精度和战时可用性问题。提出利用相位差变化率方法解决两飞行体在二维平面运动模型、三维立体运动模型时相互之间的定位问题,并且进行了可观测分析,并探讨了此方法的优缺点及下一步改进思路。%The space state information such as position, velocity and heading is needed for aircraft bodies. These information can be acquired by external navigation and positioning system such as GPS and INS. However there are problems of accuracy and availability in time of war in the external navigation and positioning system. A kind of positioning method is proposed based on phase change rate in two-dimensional model and three - dimensional model between two aircraft bodies and conducts ob- servable analysis. In the end, the advantages and disadvantages of this method are discussed, and improvement is achieved.
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