压制干扰条件下雷达探测区域研究

在研究雷达天线方向图模型的基础上,推导出无干扰、SSJ(self screening jamming,自卫式干扰)、单SOJ(stand-off jammer,远距离支援干扰)、多SOJ情况下常规雷达、频率捷变雷达的最大探测距离计算公式,针对不同情况给出不同的计算机仿真方法,可有效地对雷达在干扰条件下进行效能评估.利用该方法对多种情况下的雷达探测区域进行仿真,得到雷达探测区域分布图和盲区系数,对仿真结果进行分析,得到如下结论:SSJ条件下雷达探测区域减小严重,基本无法正常探测,但形状规则;SOJ条件下雷达探测区域不规则,在干扰方向上探测距离减小显著,在其他方向上仍可达到较大的探测距离,频率捷变雷达可有效对抗压制性干扰.由多干扰条件下雷达探测区域的研究和仿真可见,干扰布局不同盲区系数差别明显.

Research on radar detection zone under suppressing jamming

The antenna pattern of radar is studied and the maximal detection range equations of general radar, frequency agility radar are derived in the condition of no jamming, SSJ, single SOJ, multi-SOJ respectively. Then, different simulation methods are given under different conditions, with which the radar efficiency in the environment of suppressing jamming can be well evaluated. The simulations of many scenarios are made with the methods gotten in this paper, the radar detection zone charts are illustrated and blind coefficients are obtained. The following conclusions can be achieved: the radar detection zone under SSJ is a circle which is much less than that without SSJ. However, the radar detection zone under SOJ is not regular, the detection range on the direction of SOJ is much less than original range, but on the other directions which can still be large. From the simulations, it is obvious that frequency agility technique can well counter suppress jamming. From the research and simulation on the radar detection zone under multi-jamming, it is known that the blind coefficients are various under different jamming arrangements.