New digital method for linear frequency modulated signal generated

doi:10.3778/j.issn.1002-8331.2008.25.021

Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (25): 69-71.DOI: 10.3778/j.issn.1002-8331.2008.25.021

• 研发、设计、测试 • Previous Articles Next Articles

New digital method for linear frequency modulated signal generated

HUANG Hong-quan¹,FANG Fang¹,WAN Yong-lun²,SU Zai-jian¹

1.School of Nuclear Technology and Automation，Chengdu Univercity of Technology， Chengdu 610059，China
2.No.10th Research Institute，China Electronics Technology Group Corporation，Chengdu 610036，China

Received:2008-04-11 Revised:2008-07-08 Online:2008-09-01 Published:2008-09-01
Contact: HUANG Hong-quan

一种新的线性调频信号数字产生方法

黄洪全¹,方方¹,万永伦²,苏仔建¹

1.成都理工大学核技术与自动化工程学院，成都 610059
2.中国电子科技集团公司第十研究所，成都 610036

通讯作者: 黄洪全

Abstract

Abstract: The Linear Frequency Modulated（LFM） signal is a popular pulse compression radar signal.A new digital method for LFM signal generated is proposed.The LFM signal can be generated by means of two second-order infinite impulse response filters（IIR） computing.At the same time the LFM signal generated in this way with 15 MHz bandwidth and 20 µs pulse width is analyzed and evaluated.The amplitude error of the signal is compensated.The experiment results and analysis show that the merits of the method are low computational capability，very low memory and easy realization.

Key words: Linear Frequency Modulated signal, pulse compression, Infinite Impluse Response filter, matched filter, Direct Digital Synthesizer（DDS）

摘要： 线性调频信号是雷达中常采用的一种脉冲压缩信号。提出了一种新的线性调频信号数字产生方法，该方法是利用两个二阶无限脉冲响应滤波器进行计算产生信号；分析和评价了用该方法产生带宽为15 MHz、脉宽为20 µs的线性调频信号，并进行了幅度误差补偿。实验结果及分析表明：该产生方法具有计算复杂度低、无需大容量存储器且实现容易的特点。

关键词: 线性调频信号, 脉冲压缩, 无限脉冲响应滤波器, 匹配滤波器, 直接数字合成技术

HUANG Hong-quan¹,FANG Fang¹,WAN Yong-lun²,SU Zai-jian¹. New digital method for linear frequency modulated signal generated[J]. Computer Engineering and Applications, 2008, 44(25): 69-71.

黄洪全¹,方方¹,万永伦²,苏仔建¹. 一种新的线性调频信号数字产生方法[J]. 计算机工程与应用, 2008, 44(25): 69-71.

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New digital method for linear frequency modulated signal generated

一种新的线性调频信号数字产生方法

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