摘要
针对某型精密进场雷达(PAR)中频相干检波存在的缺点,采用中频采样和正交解调的方法进行数字中频信号处理改进。在Matlab中进行回波中频信号的模拟、平衡式相位检波和数字正交解调的分析仿真,最后结合高速AD9226和复杂可编程逻辑器件(CPLD)技术提出中频数字化的工程设计方法,对工程实践具有一定的参考意义。
According to the disadvantage of intermediate frequency（IF） coherent demodulation in some precision approach radar（PAR）,this paper adopts the method of IF sampling and perpendicular demodulation to improve the digital IF signal processing,performs the simulation to the echo IF signal in Matlab,analyzes and simulates the balance phase demodulation and digital perpendicular demodulation,finally brings forward the engineering design method combining the high speed AD9226 and the technique of complex programmable logic device,which has definite reference meaning to the engineering practice.
出处
《舰船电子对抗》
2010年第2期79-82,共4页
Shipboard Electronic Countermeasure
基金
陕西省自然科学基金
项目编号:SJ08F06
关键词
雷达
正交解调
数字中频
复杂可编程逻辑器件
radar
perpendicular demodulation
digital intermediate frequency
complex programmable logic device
