摘要
针对以模拟电视伴音信号为照射源的外辐射源雷达对高速加速运动微弱目标的探测问题,提出了将长时间相参积累和长时间非相参积累相结合的积累思想,以及一种基于短时分数阶傅里叶变换和动态规划的检测方法。从高速加速运动目标在外辐射源雷达中的回波模型入手,推导出了该算法的原理和实现过程,分析了算法的虚警概率和检测概率,并给出了仿真结果。分析和仿真结果均表明此算法对高速加速运动的微弱目标具有较好的检测性能。
Aiming at using the external illuminating radar with the analog TV radio signal to detect a target with a high speed and acceleration, we adopt a new idea which is combining the long-term coherent integration and the long-term noncoherent integration, and present a detection method based on the Short Time Fractional Fourier Transform （STFRFT） and Dynamic Programming（DP）. Based on the return signal model of target with a high speed and acceleration, we derive the principle and procedure, and then analyze the false alarm probability and detection probability and present the simulation result. The analysis and simulation result show that this approach has a high performance in detecting the weak target with a high speed and acceleration.
出处
《现代雷达》
CSCD
北大核心
2011年第5期30-35,共6页
Modern Radar
基金
国家自然科学基金杰出青年基金(60625104)
国防基础预研项目
武器装备预研基金
关键词
分数阶傅里叶变换
动态规划
微弱目标检测
fractional Fourier transform
dynamic programming
weak target detection
作者简介
通信作者：杨金禄Email：yangjl@bit．edu．cn
