基于集中式MIMO雷达的功率带宽联合分配算法

doi:10.3969/j.issn.1001-506X.2020.05.10

Abstract

Abstract:

Aiming at the problem of multi-target tracking by collocated multiple input multiple output radar, a power and bandwidth joint allocation method based on posterior Cramer-Rao lower bound (PCRLB) is proposed. This method firstly forecasts PCRLB of each target position error, and the sum of PCRLB is taken as the cost function to establish an optimization model, so as to transform the resource allocation problem into a non-convex optimization problem. Then the non-convex optimization problem is solved by using the convex relaxation technique and the cyclic minimization algorithm. Finally, the effectiveness of the proposed algorithm is verified by simulation. The results show that compared with the other three allocation algorithms, the proposed algorithm can effectively improve the target tracking accuracy in various scenarios.

Key words: collocated multiple input multiple output (MIMO) radar, resource allocation, posterior Cramer-Rao lower bound (PCRLB), non-convex optimization, multi-target tracking

CLC Number:

TN958

Zhengjie LI, Junwei XIE, Haowei ZHANG, Zhaojian ZHANG. Joint power and bandwidth allocation algorithm based on collocated MIMO radar[J]. Systems Engineering and Electronics, 2020, 42(5): 1041-1049.

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References 21

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目标	1	2	3
初始位置/km	(175.6, 20)	(115.2, -7.3)	(75.4, 70.9)
初始速度/(m/s)	(-580, 0)	(-180, -435)	(-380, -880)
初始加速度/(m/s²)	(-20, 0)	(-20, -15)	(-20, -20)

参数	含义
Q	目标数量
T₀	测量时间间隔
N	蒙特卡罗仿真次数
σ_r	基准距离测量误差
σ_f	基准多普勒频移测量误差
σ_θ	基准角度测量误差
$ {{\bar P}_{\min }}$	单波束最小功率
${{\bar P}_{\max }} $	单波束最大功率
P_total	系统总功率
${\rm{ }}{{\bar \beta }_{\min }} $	单波束最小带宽
$ {{\bar \beta }_{\max }}$	单波束最大带宽
β_total	系统总带宽

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Joint power and bandwidth allocation algorithm based on collocated MIMO radar

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