摘要
多通道信号发射机采用频分复用技术提高了频带利用率,在雷达通信领域得到广泛应用。数字上变频技术是信号发射机的关键技术之一,为了提高信号处理的速度,降低硬件资源消耗,利用CORDIC算法和基于多相滤波的上变频方法,改进了传统的移相滤波方法,分别实现上变频。运用MATLAB软件对CORDIC上变频方法和多相滤波上变频方法进行原理验证。仿真结果表明,CORDIC算法和基于多相滤波的上变频方法完全可以实现数字上变频功能,而且可以减少计算量,降低硬件资源消耗。
Multi-channel signal transmitter using frequency division multiplexing technology to improve the utilization of the band,in the field of radar communications has been widely used.Digital up conversion technology is one of the key technologies of signal transmitter.In order to improve the signal processing speed and reduce the hardware resource consumption,the CORDIC algorithm and the up-conversion method based on the polyphase filter are used to improve the traditional phase-shift filtering method to up-convert respectively.The MATLAB software is used to verify the CORDIC upconversion method and the multiphase filter upconversion method.The simulation results show that the CORDIC algorithm and the upconversion method based on polyphase filtering can fully realize the digital upconversion function,and can reduce the computation amount and reduce the hardware resource consumption.
作者
孙磊
蒋德富
Sun Lei;Jiang Defu(College of Computer and Information, Hohai University, Nanjing 211100,China)
出处
《国外电子测量技术》
2018年第4期26-29,共4页
Foreign Electronic Measurement Technology
