多目标速度估计的分布式MIMO雷达资源分配算法

发布时间：2018-01-17 14:11

本文关键词：多目标速度估计的分布式MIMO雷达资源分配算法　出处：《电子与信息学报》2016年10期 　论文类型：期刊论文

【摘要】：为了提高分布式MIMO雷达的多目标速度估计精度,该文分析了发射功率和信号有效时宽对估计精度的影响,进而提出一种将两者联合优化的资源分配算法。首先,以最小化目标速度估计的克拉美罗界(CRLB)最大值为目标函数,建立了包含发射功率和信号有效时宽两个优化变量的优化模型,然后采用连续参数凸估计(Sequential Parametric Convex Approximation,SPCA)算法对这个非凸的优化模型进行求解。最后,仿真结果表明利用所提算法进行资源分配能明显提高目标速度的估计精度。此外,仿真结果表明信号有效时宽对目标速度估计精度的影响大于发射功率。
[Abstract]:In order to improve the accuracy of multi-target velocity estimation for distributed MIMO radar, the effects of transmit power and signal effective time width on the estimation accuracy are analyzed in this paper. Then, a resource allocation algorithm is proposed, which combines the two methods. Firstly, the maximum value of CRLB for minimizing the target velocity estimation is taken as the objective function. The optimization model including transmit power and signal effective time width is established. Then the continuous parameter convex estimator is used to estimate the sequence Parametric Convex Approximation. Finally, the simulation results show that the proposed algorithm for resource allocation can significantly improve the estimation accuracy of target speed. The simulation results show that the influence of the effective time width on the target velocity estimation accuracy is greater than that of the transmitting power.
【作者单位】：解放军信息工程大学导航与空天目标工程学院;
【分类号】：TN958
【正文快照】： 1引言多输入多输出(MIMO)雷达[1,2]是采用多个发射阵元发送定制波形信号,并采用多个接收阵元对回波进行某种联合处理的雷达系统,已成为了新体制雷达研究的热点。理论上,MIMO雷达系统所包含的阵元数目越多,发射功率越大,目标的参数估计精度就越高[3]。但是在实际应用中,由于MIM

【相似文献】