一种实时雷达脉冲信号检测算法及其性能分析  被引量:2

A real-time radar pulse signal detection method and its performance analysis

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作  者:王芳[1] 王旭东[2] 潘明海[2] 

机构地区:[1]光电控制技术重点实验室,河南洛阳471009 [2]南京航空航天大学电子信息工程学院,江苏南京210016

出  处:《现代电子技术》2012年第7期5-8,共4页Modern Electronics Technique

基  金:国家自然科学基金项目资助(61071164)

摘  要:提出了一种新的实时雷达脉冲信号检测算法,该算法首先将数据分为两路,对一路进行单点滑动、取共轭,然后与另一路信号相乘,再累加、取模,最后与门限比较,得到检测结果。算法具有递推和流水结构,硬件实现时只需一个复数乘法器、一个复数加法器、一个复数减法器和一个复数取模运算器。在此采用一阶扰动分析,推导了算法起始点检测误差的解析式,给出了算法性能边界,仿真结果验证了理论推导的正确性。与其他信号检测算法相比,该算法结构规整,易于硬件应用,可实现实时检测。A real-time radar pulse signal detection method is proposed.Firstly,two input data sequence are got by a demultiplexer,then taking conjugate and one point delay operation is applied to one of them.Secondly,multiplying these two sequence,accumulating the multiply result and outputting its complex magnitude.Finally,after comparing with a threshold,the detection result can be gained.Since the detection algorithm is very simple,the hardware can be designed using a small amount of circuitry,consisting of only 1 complex multiplier,1 complex adder,1 complex subtracter and 1 complex magnitude calculator.Therefore,it can realize the high-speed detection of target signals by constructing a pipeline architecture.The start-point estimation error is derived based upon first order purterbation analysis,and then the performance boundary of this method is presented.Simulation results confirm the derivation.Comparing with other radar pulse signal detection method,this proposed algorithm leads to clear and neat structure,good real-time and suitable for hardware implementation.

关 键 词:雷达脉冲 信号检测 单点滑动 乘法累加 

分 类 号:TN911-34[电子电信—通信与信息系统]

 

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