Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate by employing multiple frequencies (synthetic pulse) and multiple antennas (synthetic antenna). According to Ambiguity Function(AF), it...Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate by employing multiple frequencies (synthetic pulse) and multiple antennas (synthetic antenna). According to Ambiguity Function(AF), its range resolution depends only on bandwidth of transmitted signals, however, the distance grating lobes emerge when increasing the time-bandwidth product of transmitted signals. The performance of pulse compression is analyzed with the transmitted signals modulated by phase-coded sequences. It is seen that greater ratio of pulse compression and suppression of range sidelobe in SIAR can be obtained, and its effective range and range resolution is increased as well.展开更多
基于大型系留气球平台,文章提出了球载共形稀布阵综合脉冲孔径雷达(sysnthetic impulse and aperture radar,SIAR)的构想。对共形稀布阵综合脉冲孔径雷达进行了建模和仿真分析,构建了球载共形稀布阵列,对该稀布阵进行天线方向图仿真,并...基于大型系留气球平台,文章提出了球载共形稀布阵综合脉冲孔径雷达(sysnthetic impulse and aperture radar,SIAR)的构想。对共形稀布阵综合脉冲孔径雷达进行了建模和仿真分析,构建了球载共形稀布阵列,对该稀布阵进行天线方向图仿真,并针对升空工作情况下地杂波进行了仿真分析和系统探测性能分析。该文研究为球载共形稀布阵综合脉冲孔径雷达的优化设计提供了理论支撑。展开更多
文摘Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate by employing multiple frequencies (synthetic pulse) and multiple antennas (synthetic antenna). According to Ambiguity Function(AF), its range resolution depends only on bandwidth of transmitted signals, however, the distance grating lobes emerge when increasing the time-bandwidth product of transmitted signals. The performance of pulse compression is analyzed with the transmitted signals modulated by phase-coded sequences. It is seen that greater ratio of pulse compression and suppression of range sidelobe in SIAR can be obtained, and its effective range and range resolution is increased as well.
文摘基于大型系留气球平台,文章提出了球载共形稀布阵综合脉冲孔径雷达(sysnthetic impulse and aperture radar,SIAR)的构想。对共形稀布阵综合脉冲孔径雷达进行了建模和仿真分析,构建了球载共形稀布阵列,对该稀布阵进行天线方向图仿真,并针对升空工作情况下地杂波进行了仿真分析和系统探测性能分析。该文研究为球载共形稀布阵综合脉冲孔径雷达的优化设计提供了理论支撑。