基于进化PSO算法的稀疏捷变频雷达波形优化

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为了提高稀疏捷变频(sparse frequency agility,SFA)雷达信号在稀疏重构中的精度和稳定性,提出一种基于进化粒子群优化(particle swarm optimization,PSO)算法的SFA雷达信号的优化设计.首先,推导了SFA雷达的信号模型和稀疏重构时的字典矩阵.然后,以最小化SFA雷达信号对应字典矩阵的相关性为目标函数,稀疏载频情况下有效带宽和有效跳频间隔为约束条件,建立优化模型.最后,通过进化PSO算法求解得到最优载频序列.仿真结果表明,所提算法在满足稀疏性约束的条件下,能够有效提高字典矩阵的正交性,保证稀疏重构信号的精度和可靠性.
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