Third , research and analyze the feature of signal of frequency agile radar , and the mathematic model of the radar is constructed . the best interference methods to frequency agile radar is achieved , and interference ability is evaluated 研究和分析捷變頻雷達的信號特征,建立了該種雷達的數學模型,得出了對捷變頻雷達的最佳干擾模式,并進行了干擾性能的評估。