相控阵雷达阵面发射单元的供电性能对雷达性能有重要影响,研究供电性能指标和设计方法对指导大型相控阵雷达系统优化具有重要意义。基于发射单元的脉冲负载特性,建立了发射单元的等效电路和数学模型,分析了电压突变的产生机理。采用状态空间分段方法,研究了发射单元供电系统的四种工作状态。基于系统状态方程,推导了发射单元电压顶降的理论计算公式,得到电压顶降的主要影响因素。为满足电压顶降约束,推导了储能电容容量的精确和近似计算公式。通过仿真分析,验证了所提出结论的正确性。所提出的命题和推论构成了发射单元供电系统设计的基本理论,为长脉宽大型相控阵雷达的阵面供电系统设计奠定了理论基础,具有良好的工程应用价值。

Based on the pulse load characteristics of the transmitting unit, the equivalent circuit and the mathematical model of the transmitting unit are established. Four states of the transmitting unit power supply system are studied by the state space segmentation method. Based on the system states equations, the theoretical calculation formula of the voltage drop with the transmitting unit is derived. The main factors of the voltage drop are also obtained. In order to satisfy the constraint of the voltage drop, the accurate and approximate formulas of the capacitance for energy storage are derived. The achievements are verified by the simulation. The proposed propositions and inferences constitute the basic theory of the power supply system design of the transmitting unit. The conclusions lay a theoretical foundation for the design of power supply system of phased array radar with long pulse width, which has great engineering application value.

TN958