CAJ | 학술논문

研制了一种基于梳状谱发生器的全相参脉冲压缩毫米波雷达目标射频回波模拟器。通过与被测雷达共用基准频率参考信号，结合梳状谱发生器及DDS，保证了输出信号和雷达发射信号的相参性和快速频率跳变，实现较好的相位噪声性能和杂散抑制。该系统输出为Ka波段，带宽2 GHz，步进100 kHz，相位噪声小于-80 dBc@1kHz，跳频时间小于2μs。
연제료일충기우소상보발생기적전상삼맥충압축호미파뢰체목표사빈회파모의기。통과여피측뢰체공용기준빈솔삼고신호，결합소상보발생기급DDS，보증료수출신호화뢰체발사신호적상삼성화쾌속빈솔도변，실현교호적상위조성성능화잡산억제。해계통수출위Ka파단，대관2 GHz，보진100 kHz，상위조성소우-80 dBc@1kHz，도빈시간소우2μs。
A new coherent pulse compressed mm-wave radar RF rcho generator based on comb spectrum generator was de-veloped. Using the same frequency reference signal of mm-wave radar to be tested, combined with comb spectrum genera-tor and DDS, the coherency of the output signal was ensured, and fast frequency switching performance was achieved with low noise and spurious level. The developed echo generator outputs in Ka band, with output bandwidth of 2 GHz, frequen-cy step of 100 kHz, phase noise level of-80dBc@1kHz, low spurious level of-60 dBc and fast frequency switching time of 2μs.