雷达杂波抑制方法及DSP实现技术
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摘要
本文主要介绍和分析了相控阵雷达系统的动目标显示技术和工程实现方法。首先简述了雷达杂波特性，讨论了几种对固定杂波和运动杂波的抑制方法，重点讨论了利用自适应对消技术实现对运动杂波的抑制方法。文中介绍了几种求解匠适应对消器的权系数的方法。结合某型相控阵雷达的动目标处理系统研制，仿真了工程中采用的四脉冲对消技术和设计级联杂波抑制滤波器的方法，并给出了相应的性能指标。提出了相控阵雷达中一个波束位置发射脉冲数少时实现杂波抑制时对固定对消进行相位和幅度补偿的改进方法。最后给出了全部采用数字信号处理器ADSP21062实现动目标处理系统的软、硬件方案，该方案具有结构简单、体积小、能适应灵活信号处理的优点还能增强系统的稳定性，并且已经成功应用于某型相控阵雷达，在工程实践中取得了良好的效果。
This paper is mainly concern about the technology of radar moving target indication of phased array radar. Some properties of clutters and some methods of clutter rejection including ground and moving clutter rejection are discussed at first. In this thesis, the emphasis is put on the moving clutter rejection, which adopts the means of adaptive moving target indication (AMT1). Some algorithms of AMTI are introduced in the paper. In certain phased array radar, there are only several pluses in a radar beam, which makes against clutter cancellation. The four-pulse canceler is commonly adopted in this instance. We bring forward some schemes of clutter rejection to improve performance of radar system. And some emulational results are given. These improved methods consist amplitude and phase compensate of fixed cancellation. At last we introduce a processing method of radar moving target indication all by ADSP21062. It is simple in structure, small in size and can be easily handled. It also can enhance system stab
ility. And it is successfully adopted in certain phased array radar. It has high ratio of performance over price.
This paper is mainly concern about the technology of radar moving target indication of phased array radar. Some properties of clutters and some methods of clutter rejection including ground and moving clutter rejection are discussed at first. In this thesis, the emphasis is put on the moving clutter rejection, which adopts the means of adaptive moving target indication (AMT1). Some algorithms of AMTI are introduced in the paper. In certain phased array radar, there are only several pluses in a radar beam, which makes against clutter cancellation. The four-pulse canceler is commonly adopted in this instance. We bring forward some schemes of clutter rejection to improve performance of radar system. And some emulational results are given. These improved methods consist amplitude and phase compensate of fixed cancellation. At last we introduce a processing method of radar moving target indication all by ADSP21062. It is simple in structure, small in size and can be easily handled. It also can enhance system stab
ility. And it is successfully adopted in certain phased array radar. It has high ratio of performance over price.
引文
[1]丁鹭飞，《雷达原理》，西北电讯工程学院出版社，1984
[2]赵树杰等，《数字信号处理》，西安电子科技大学出版社，1997
[3]张光义，《相控阵雷达系统》，国防工业出版社，2000
[4]韩培尧，《雷达抗干扰技术》，国防工业出版社，1980
[5]戴树荪等，《数字技术在雷达中的应用》，国防工业出版社，1981
[6]吴兆熊等，《数字信号处理》，国防工业出版社，1985
[7]吴顺君，《近代谱估计方法》，西安电子科技大学出版社，1994
[8]张未萌硕士论文，雷达自适应杂波抑制与检测新方法的研究，2000
[9]张贤达，《现代信号处理》，清华大学出版社，1994
[10]David K.Barton,Radar Technology Encyclopedia,ARFECH HOUSE, INC.1998
[11]K.Balasubramanian, A novel method of tracking the target in Doppler frequency shift. IEEE. vol 37,NO 1, Feb 1991
[12]Chang Chee Hang,Radar MTI/MTD Implementation and Performance, 2000 2ned International Conference on Microwave and Millimeter wave Technology Proceedings,2000
[13]Analog Devices,Inc, ADSP-21060x SHARC User's Manual,Second Edition,1997
[14]苏涛等，《高性能数字信号处理器与高速实时信号处理》，西安电子科技大学出版社，2000
[15]赵曙光等，《可编程逻辑器件原理、开发与应用》，西安电子科技大学出版社，2000
[2]赵树杰等，《数字信号处理》，西安电子科技大学出版社，1997
[3]张光义，《相控阵雷达系统》，国防工业出版社，2000
[4]韩培尧，《雷达抗干扰技术》，国防工业出版社，1980
[5]戴树荪等，《数字技术在雷达中的应用》，国防工业出版社，1981
[6]吴兆熊等，《数字信号处理》，国防工业出版社，1985
[7]吴顺君，《近代谱估计方法》，西安电子科技大学出版社，1994
[8]张未萌硕士论文，雷达自适应杂波抑制与检测新方法的研究，2000
[9]张贤达，《现代信号处理》，清华大学出版社，1994
[10]David K.Barton,Radar Technology Encyclopedia,ARFECH HOUSE, INC.1998
[11]K.Balasubramanian, A novel method of tracking the target in Doppler frequency shift. IEEE. vol 37,NO 1, Feb 1991
[12]Chang Chee Hang,Radar MTI/MTD Implementation and Performance, 2000 2ned International Conference on Microwave and Millimeter wave Technology Proceedings,2000
[13]Analog Devices,Inc, ADSP-21060x SHARC User's Manual,Second Edition,1997
[14]苏涛等，《高性能数字信号处理器与高速实时信号处理》，西安电子科技大学出版社，2000
[15]赵曙光等，《可编程逻辑器件原理、开发与应用》，西安电子科技大学出版社，2000