| 基于AD9954芯片的非线性调频信号实现 |
| |
| 引用本文： | 王晓铭,王哲华.基于AD9954芯片的非线性调频信号实现[J].上海航天,2007,24(3):61-64. |
| |
| 作者姓名： | 王晓铭 王哲华 |
| |
| 作者单位： | 1. 中国人民解放军海军驻上海地区航天系统军代室,上海 200235
2. 上海航天电子通讯设备研究所,上海 200082 |
| |
| 摘 要： | 提出了一种基于新型直接式数字合成(DDS)AD9954芯片,用数字阶梯逼近法直接读取数据产生非线性调频(NLFM)信号的方法。介绍了NLFM信号的实现、PIC控制电路与接口,分析了方法的不足。研究表明,该法所用硬件资源少,适于小时宽频宽乘积的非线性调频脉冲信号的实现。
|
| 关 键 词： | 非线性调频 数字线性逼近法 数字阶梯逼近法 AD9954芯片 |
| 文章编号： | 1006-1630（2007）03-0061-04 |
| 修稿时间： | 2007-01-24 |
Nonlinear FM Signal Generator Based on AD9954 |
| |
| WANG Xiao-ming,WANG Zhe-hua.Nonlinear FM Signal Generator Based on AD9954[J].Aerospace Shanghai,2007,24(3):61-64. |
| |
| Authors: | WANG Xiao-ming WANG Zhe-hua |
| |
| Institution: | 1. The CPLA Navel Deputy Office in Shanghai Aerospace System, Shanghai 200235, China; 2. Shanghai Institute of Aerospace Electronic Telecommunication, Shanghai 200082, China |
| |
| Abstract: | A method to produce nonlinear frequency modulation(NLFM) signal by using digital step approaching to read data directly based on AD9954 chip was put forward in this paper.The forming of the NLFM signal,and PIC control circuit and interface were introduced.The shortages of the generator were also analyzed.The analysis showed that the hardware used in this method was simple.The generator was suitable to produce NLFM signal with small product of time and frequency. |
| |
| Keywords: | Nonlinear frequency modulation Digital linear approaching Digital step approaching AD9954 chip |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
