面向目标容量的雷达通信一体化功率分配算法  

Power allocation algorithm for target capacity in integrated radar and communication system

作　　者：张贞凯[1] 肖悦 商晓可 ZHANG Zhenkai;XIAO Yue;SHANG Xiaoke(Ocean College,Jiangsu University of Science and Technology,Zhenjiang 212000,Jiangsu China)

机构地区：[1]江苏科技大学海洋学院,江苏镇江212000

出　　处：《华中科技大学学报(自然科学版)》2025年第3期56-62,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61871203)。

摘　　要：针对雷达通信一体化系统功率资源利用率低的问题,提出了一种面向目标容量的功率分配算法,以系统总功率为限制条件,在保证通信信道容量的同时,提高满足定位精度的目标数量.首先给出目标的定位误差克拉美罗下界,引入指数函数,建立功率和信道容量约束下最大化目标容量的功率分配模型;之后加入目标权重因子,将最大化目标容量问题转化为最小化定位总误差问题;最后使用交替优化算法进行求解.仿真结果表明:在系统总功率一定、确保定位性能与通信信道容量的情况下,所提算法可以显著提高目标数量.In order to solve the problem of low power resource utilization in integrated radar and communication system,a power allocation algorithm for target capacity was proposed,which taked the total power of the system as the limit condition,and increased the number of targets satisfying the positioning accuracy while ensuring the communication channel capacity.Firstly,the CramerRao lower bound of target positioning error was given,and exponential function was introduced to establish a power allocation model to maximize target capacity under power and channel capacity constraints.After adding the target weight factor,the problem of maximizing the target capacity was transformed into the problem of minimizing the total positioning error,and the alternate optimization algorithm was used to solve it.The simulation results show that the proposed algorithm can effectively increase the number of targets when the total power of the system is constant and the positioning performance and communication channel capacity are guaranteed.

关 键 词：雷达通信一体化系统 功率分配 目标定位 信道容量 优化问题 

分 类 号：TN957.51[电子电信—信号与信息处理]