CAJ | 학술논문

基于数字相控阵体制的雷达通信一体化系统通常采用雷达、通信共信号波形和共射频前端，通道包含了从天线单元至波束形成输入端口在内的整个完整馈电链路，通道时延通常由单元阵外时延和阵内时延组成，单元分布位置不同、互连电缆长短不一、同型号元器件性能差异等导致通道间时延出现不一致，这种通道间时延不一致会恶化系统信噪比，是空分处理面临的新难题。文章从理论上推导出基于数字相控阵体制的雷达通信一体化系统通道间时延不一致的等效数学模型，给出了幅相特性对系统性能影响的仿真分析结果，为工程实现提供了设计依据。
기우수자상공진체제적뢰체통신일체화계통통상채용뢰체、통신공신호파형화공사빈전단，통도포함료종천선단원지파속형성수입단구재내적정개완정궤전련로，통도시연통상유단원진외시연화진내시연조성，단원분포위치불동、호련전람장단불일、동형호원기건성능차이등도치통도간시연출현불일치，저충통도간시연불일치회악화계통신조비，시공분처리면림적신난제。문장종이론상추도출기우수자상공진체제적뢰체통신일체화계통통도간시연불일치적등효수학모형，급출료폭상특성대계통성능영향적방진분석결과，위공정실현제공료설계의거。
Signal wave and front-end are often shared in the radar-communication integration system based on digital phased arrays.The channel consists of the entire feeding chain from the antenna element to the beamforming input end.The channel delays include the delays both within and outside the element array. Such delays result from the difference of element positions,cables,and components,which degrade the SNR and become hard for SDMA.The model for delay effect between channels for radar-communication integra-tion system is deduced in theory.The simulation and analysis are made for the effects of amplitude and phase characteristics on the system performance.