摘要
针对比幅单脉冲雷达和差通道相位一致性问题,基于波束反演原理,提出了一种系统相位误差校正方法。利用和差信号重新构建新的交叉波束,再通过比幅得到交叉波束比幅曲线,利用交叉波束比幅曲线对通道相位误差的敏感性,经过相位误差补偿,搜索比幅曲线峰值的最大值,确定系统的相位误差。最后,采用实测数据验证了所述方法。结果表明,该方法可以准确测量雷达整机的和差通道相位误差,通过数字补偿,完成通道间相位校正。
To compensate the phase error from sum and difference channels in an amplitude-comparison monopulse radar, a novel phase-error calibration method based on beam retrieval is proposed. The virtual cross beams are recovered by beam retrieval with the sum and difference signal, and then a new cross- beam ratio curve is gained by amplitude comparison. Since the cross-beam ratio curve is sensitive to channel phase error, the compensated phase error is estimated in the ratio curve with maximal peak value by searching a series ratio curves with difference phase errors. The method is validated by measured data. The results show that this method can accurately measure the phase error between the sum and difference channels, and then the phase-error correction is completed by digital compensation.
出处
《战术导弹技术》
2014年第3期72-78,共7页
Tactical Missile Technology
