多目标测距信号功率控制策略研究

Research of Power Control Strategy of Range Signal on Multi-Targets

飞机在进行询问回答式码相关测距时,由于码的互相关作用,每架飞机的测距询问信号都可能会成为其他飞机的干扰;在有限的可用功率下,就需要一个可靠和高效的功率控制策略;首先分析了地面不发送功率控制指令的方法,此法简单易行,但不灵活;然后分析了存在通信的方法,分固定步长和基于纳什博弈论的功率控制两种形式讨论;对以上方法进行仿真对比分析,结果表明:基于纳什博弈论的功率控制方法收敛更快,相比于无通信功率控制方法和固定步长功率控制方法更能满足飞机码相关测距的需求。

Because of the correlation of codes between airplanes, each airplane＇s asking signal contributes to the interference seen by the other airplanes when it is being ranging using code correlation. Given limited available power, this creates a need for effective and efficient power control strategy. Firstly, we analyzed the method that receiving station didn＇t send instruction of power control. It is simple and easy to actualize, but inflexible. Then we analyzed the other method that exist communication. This method is making up of two parts. One is fixed step, the other is basing on Nash game. According to the contrast analysis of simulation of above methods, the results indicate that the method of basing on Nash game has faster constringency compared with the ways that without communication and fixed step. It is better to satisfied with the need that ranging using code correlation in airplanes.