宽带与窄带雷达对飞机目标回波特性对比研究

A Comparative Study on Characteristics of Reflected Signals From Broadband and Narrowband Radars

根据飞机目标对宽带信号和窄带信号的不同散射特性 ,完成了窄带雷达回波信号等效为宽带雷达回波信号矢量合成的建模 ,并对宽带信号和窄带信号的单脉冲检测进行了仿真比较。结果表明 ,用单脉冲进行检测时 ,假设雷达发射功率和接收机噪声系数相同 ,对同一飞机目标 ,宽带雷达通过脉内非相参积累后的检测性能仅比窄带雷达的检测性能差 0dB～

According to different scattering characteristics of airplane target due to broadband and narrowband signals, the reflected signal of narrowband radar is generated by synthesizing given broadband radar echo signals. The detection performance of the broadband radar is compared to that of the narrowband radar using just one detected pulse. Simulation results proved that, in most cases, the input SNR of narrowband radar can be enhanced about 0 dB～2 dB when the transmitted powers of radars and the noise figures are the same while detecting the same target. [