中文摘要：

针对当前要地防空面临的新空袭特点，提出地对空雷达干扰应由过去以投弹圈为唯一的干扰防线向远程干扰预警机，中程干扰空袭武器载机的2道干扰防线转变。通过对所掩护目标暴露区的仿真，分析了不同干扰防线下干扰站的部署方式对暴露区形状的影响，进而提出了较为合理的部署方式。仿真表明，该部署方式能在同等条件下很大限度地降低空袭效能，起到有效保护要地的作用。

英文摘要：

The key assets are faced with the new kinds of air attack in air defence. Ground-to-air radar jamming must transfer from only one line of air defence for jamming aircrafts carrying air attack weapons to two lines of air defence for jamming early-warning aircraft at long range and jamming aircrafts carrying air attack weapons at intermediate range. By simulations of exposed region, the different influences of exposed region caused by different configurations are analyzed and a rational configuration is provided. Simulations demonstrate that the influence of air attack can be reduced with rational configuration and the key assets can be protected better.