摘要
气球载雷达升空工作,面临强大的地海杂波和云雨杂波,尤其当目标处于云雨杂波区时,雷达的探测性能将受到严重影响。该文主要研究分析气球载雷达的云雨杂波特性。首先建立了气球载雷达云雨杂波的几何模型,然后在分析影响云雨杂波特性的各种因素的基础上,导出了气球载雷达在指定距离门内云雨杂波模型的表达式,最后通过仿真给出了气球载雷达云雨杂波的距离方位维杂噪比和距离-多普勒谱特性,其结果可以为气球载雷达杂波抑制和信号处理方法的研究提供参考。
Tethered aerostat borne radar works in the air and faces strong ground clutter, sea clutter, and rain clutter. The detection performance of the radar will be come worse especially when the target is in the rain clutter region. The characteristic of rain clutter for tethered aerostat borne radar is studied. First, the geometry model of rain clutter is presented. By analyzing the factors which affect the characteristic of rain clutter, the rain clutter＇s expression of certain range gate is then derived. Finally, the rain clutter＇s clutternoise ratio of range-azimuth and range-Doppler spectrum are simulated and analyzed. The results can be used as the reference for the clutter suppression and signal processing of tethered aerostat borne radar.
出处
《雷达科学与技术》
2010年第1期15-19,共5页
Radar Science and Technology
