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分析平流雾和辐射雾媒介内能见度、电波频率与雾体反射率之间的关系,提出云雾衰减、云雾体杂波和云雾天线噪声等综合因素条件下雷达探测距离模型.仿真分析X波段和Ka波段火控雷达受雾体吸收、散射影响时,不同俯仰角、能见度、媒介属性、目标位置及反射截面积条件下海面和低空目标的探测性能.结果表明,两种雷达在仰角为0.4°时对雾区内外目标探测距离受能见度100 m平流雾影响的衰减分别为24.67%、9.95%和58.47%、53.40%,对于频率较高雷达,含水量较大云雾会极大缩短其探测距离.
The relationship between the visibility and frequency of the fog and the reflectivity of the fog was analyzed, and the radar detection distance model was proposed under the conditions of cloud attenuation, cloud clutter and cloud antenna noise, etc. The X-band and Ka The detection performance of the sea-level and the low-altitude targets under the condition of the fog body absorption and scattering, the different pitching angles, visibility, medium attributes, target position and reflection cross-sectional area of the band-based fire control radar are studied.The results show that when the elevation angles of the two radars are 0.4 ° The attenuation of the target detection range inside and outside the fog area is 24.67%, 9.95% and 58.47%, 53.40% respectively due to the visibility of 100 m advection fog. For the higher frequency radar, the cloud with larger water content will greatly shorten the detection range.