摘要
为了得到具有最佳跳频性能的跳频图案,采用RS码作为跳频序列,控制DDS产生各种频率正弦波。RS跳频序列具有非重复且汉明相关性能好的特性,能够使跳频信号产生最大的跳频增益。相比传统跳频序列,RS跳频序列不存在频率滞留问题。直接数字频率合成器DDS具有许多直接式频率合成技术DS和间接式频率合成技术IS所不具备的优点,如具有极高的频率分辨率和极短的频率转换时间等。文中给出了跳频信号发生器的设计方案,使用MATLAB仿真验证了该方案的可行性。
For getting hopping-frequency map with best FH performance, design of frequency hopping signal generator is put forward. RS -code is an unrepeated hopping-sequence, and it possesses of a good hamming coirelation performance. Compared with traditional methods, RS-code doesn＇ t own the problem of frequency-holding. Different from traditional methods, DDS has many merits, such as high resolution and short frequency-conversion time, which direct and indirect frequency synthesis don＇ t own. So it uses RS-code as frequency hopping sequence, controlling DDS to produce sine wave of different frequency. Simulation in MATLAB proves the feasibility of the scheme.
出处
《计算机技术与发展》
2012年第1期195-197,201,共4页
Computer Technology and Development
基金
国防预言基金(513270203)
