| As an effective technique , radio frequency simulation improve and verify guidance function . Radio frequency target simulation is mainly used to simulate target echo signal in radio frequency guidance system .It is analied and simulated in the thesis that weather echo signal . Firstly , the basic methods used to simulate random processes , and then accomplished both in time domain and frequency domain based on Matlab and Simulink on PC . In order to get better frequency properties , two promised methods are shown as well as their better properties . Then general theory of radar echo signal are analied and with the basement ideal general radar echo is simulated as well as clutter and noise signal , from the dot target to the line target even to the area target . In order to establish the model of weather echo signal , the principle of weather echo information is described and accomplished on Simulink and the scheme of weather target simulator is shown lately according to the weather echo characteristics . According to the practice in RFSS , the satisfied result come out . The technic of weather echo signal simulation shown in the thesis get some theory value and better practical values . |