计算机工程与科学
計算機工程與科學
계산궤공정여과학
COMPUTER ENGINEERING & SCIENCE
2010年
4期
139-141,145
,共4页
超宽带%带通采样%数字式瞬时测频%软件无线电
超寬帶%帶通採樣%數字式瞬時測頻%軟件無線電
초관대%대통채양%수자식순시측빈%연건무선전
UWB%bandpass sampling%DIFM%software radio
基于数字式瞬时测频(DIFM)的傅立叶变换法原理,利用Matlab的Simulink工具对超宽带多速率瞬时测频接收系统进行了建模与仿真.在输入信号为噪声干扰的单信号情况下对其测频性能进行了模块化仿真,同时用GUI工具做了一个频率解模糊程序验证了系统输出.仿真结果表明,该方案的接收系统在输入信号频率为12GHz～18GHz范围内能实现准确测频.
基于數字式瞬時測頻(DIFM)的傅立葉變換法原理,利用Matlab的Simulink工具對超寬帶多速率瞬時測頻接收繫統進行瞭建模與倣真.在輸入信號為譟聲榦擾的單信號情況下對其測頻性能進行瞭模塊化倣真,同時用GUI工具做瞭一箇頻率解模糊程序驗證瞭繫統輸齣.倣真結果錶明,該方案的接收繫統在輸入信號頻率為12GHz～18GHz範圍內能實現準確測頻.
기우수자식순시측빈(DIFM)적부립협변환법원리,이용Matlab적Simulink공구대초관대다속솔순시측빈접수계통진행료건모여방진.재수입신호위조성간우적단신호정황하대기측빈성능진행료모괴화방진,동시용GUI공구주료일개빈솔해모호정서험증료계통수출.방진결과표명,해방안적접수계통재수입신호빈솔위12GHz～18GHz범위내능실현준학측빈.
Using Matlab's simulink tool to model and simulate the UWB Mutirate Digital Instantaneous Frequency Measurement(DIFM) system based on DIFM's fast Fouriour transform theory.We have built a Multirate DIFM simulating model,and it is intuitionistic,real-time and realistic,meanwhile,because of the advantage of simulation techniques,when the input signal is single-carrier-frequency with noise,the simulation result indicates that as the input frequency is in 12GHz and 18GHz,the DIFM system has good frequency measuring performance.
