150-MHz相干雷达系统(冰帽探测)

R.K. Moore, G. Raju, W. Xin, C. Davis, K. Demarest, D.I. Rummer
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引用次数: 0

摘要

研制了一种150-MHz相干雷达,用于探测南极冰盖。该雷达的峰值功率为20 W,但啁啾增益为26,相干处理增益从256到64000不等,具体取决于控制设置和应用。啁啾需要一个低时间带宽产品,以允许在冰面上操作,最小范围只有250米。该系统使用17兆赫的带宽,在冰上达到5米左右的分辨率,在空中达到9米左右的分辨率。一对SAW(表面声波)色散延迟线提供线性调频脉冲扩展和压缩。系统的射频和数字部分随软件一起描述。该雷达于1987年12月在南极洲西部成功地进行了地面和空中模式的测试。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A 150-MHz coherent radar system (ice cap sounding)
A 150-MHz coherent radar has been developed for sounding the Antarctic ice cap. The radar has a peak power of 20 W, but it has a chirp gain of 26 and coherent processing gain from 256 to 64000, depending on control settings and application. A low time-bandwidth product was required for the chirp, to allow operation from the surface of the ice with a minimum range of only 250 m. The system uses 17-MHz bandwidth to achieve about 5-m resolution in ice or about 9 m in air. A pair of SAW (surface acoustic wave) dispersive delay lines provide linear FM pulse expansion and compression. The RF and digital portions of the system are described along with the software. The radar was tested successfully in both surface and airborne modes in West Antarctica during December 1987.<>
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