CAJ | 학술논문

针对有源相控阵天线雷达散射截面积（radar cross section，RCS）计算复杂，及天线单元位置误差对其RCS的影响难以估计的问题，基于天线单元的相位误差分析，建立了有源相控阵天线的结构与散射阵因子耦合模型，极大简化了有源相控阵天线RCS计算的复杂度，并在此基础上研究了天线单元位置误差对增益及RCS的综合影响。结果表明，合理降低天线单元的位置精度可以抑制有源相控阵天线的RCS。工程人员可基于此权衡辐射和散射性能，适当放宽有源相控阵天线加工及安装公差，在保证天线综合性能前提下有效减轻加工难度，降低加工成本。
침대유원상공진천선뢰체산사절면적（radar cross section，RCS）계산복잡，급천선단원위치오차대기RCS적영향난이고계적문제，기우천선단원적상위오차분석，건립료유원상공진천선적결구여산사진인자우합모형，겁대간화료유원상공진천선RCS계산적복잡도，병재차기출상연구료천선단원위치오차대증익급RCS적종합영향。결과표명，합리강저천선단원적위치정도가이억제유원상공진천선적RCS。공정인원가기우차권형복사화산사성능，괄당방관유원상공진천선가공급안장공차，재보증천선종합성능전제하유효감경가공난도，강저가공성본。
To reduce the computational complexity of antenna radar cross section (RCS),and estimate the effects of element position errors on antenna RCS,a novel structural and scattering array factor (SAF)coupling model of active phased array antennas is developed.This model is derived by the element phase errors,which can greatly simplify the computational complexity of the array antenna RCS issues.And the integrated influence of the antenna element position errors on antenna gain and RCS is analyzed.The simulation results verify that an obvious RCS reduction of active phased array antennas could be implemented by reasonable enlargement of position tolerance of the array elements.On account of the coupling model,the radiation and scattering perform-ances of active phased array antennas could be balanced by engineering to relax array antenna processing and in-stall tolerances.With the premise of synthetic antenna performance ensurance,the difficulty of processing and development cost could be reduced.