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引言本文对75年进口的法国“TH.D.2503-2”型雷达的信标自频调(AFC)系统的跟踪捕获的动态过程、稳定性能、精度等作了一理论分析。分析时参考了文献[2]所采用的状态变量法,考虑了系统的非线性和离散性。给出滿足设计指标的有关公式。并将2503方案与锯齿波搜索方案作了比较,指出前者的一些优点。同时为克服2503方案中积分饱和现象和小信号捕获带宽窄的缺点,提出改进方案供讨论,并经实践有一定效果。
INTRODUCTION This paper presents a theoretical analysis of the dynamic process, stability, accuracy and so on of the tracking acquisition of the beacon self-frequency modulation (AFC) system of a 75-year imported French TH.D.2503-2 radar. In the analysis, reference is made to the state-variable method adopted in [2], considering the nonlinearity and dispersion of the system. Give the design formula to meet the relevant formula. And 2503 programs and sawtooth search program were compared, pointing out some of the advantages of the former. At the same time, in order to overcome the shortcoming of integral saturation phenomenon and small signal acquisition bandwidth in 2503 scheme, an improved scheme is proposed for discussion and has certain effect through practice.