电波环境水平不均匀性对雷达探测精度影响研究  

Study on effect of horizontal inhomogeneity of radiowave environment on radar detection accuracy

作　　者：刘琨[1,2] 吕江涛[3] 朱庆林[1] 孙方[1] 韩杰[1] LIU Kun;LV Jiangtao;ZHU Qinglin;SUN Fang;HAN Jie(China Research Institute of Radiowave Propagation,Qingdao 266107,China;School of Electronic Information,Wuhan University,Wuhan 430079,China;Nanjing Research Institute of Electronic Technology,Nanjing 210013,China)

机构地区：[1]中国电波传播研究所,山东青岛266107 [2]武汉大学电子信息学院,武汉430079 [3]南京电子技术研究所,南京210013

出　　处：《空军预警学院学报》2020年第5期335-339,共5页Journal of Air Force Early Warning Academy

摘　　要：电波折射成为影响雷达等测控设备探测精度的最重要误差源.根据雷达高精度探测的需要,利用MM5、NeQuick模型分别仿真分析了对流层、电离层区域电波环境水平不均匀性,并重点研究了电波环境水平不均匀性对折射误差修正精度的影响.研究结果表明:对于工作频率1.0 GHz或更低频段雷达而言,对流层水平不均匀性对折射误差修正精度影响相对较小,而电离层水平不均匀性显著,对折射误差修正及雷达探测精度影响较大.特别是对于UHF或更低频段雷达,对流层水平不均匀性影响可忽略不计,而电离层水平不均匀性影响更大,需重点考虑并予以修正.本文研究结果对不同工作频率的雷达的大气折射误差修正的论证、设计及研制具有较强的参考和支撑作用.Radio wave refraction has become the most important error source affecting the detection accuracy of radar and other measurement and control equipment.According to the needs of radar high-precision detection,this paper uses MM5 and NeQuick model to simulate and analyze the horizontal inhomogeneity of radiowave environment in the area of troposphere and ionosphere respectively,and also emphatically studies the influence of horizontal inhomogeneity of radiowave environment on the correction accuracy of refraction error.The results show that,for radar operating at a frequency of 1.0 GHz or lower,the horizontal inhomogeneity of troposphere has relatively smaller influence on the accuracy of refraction error correction,while the significant horizontal inhomogeneity of ionosphere has a great impact on the refraction error correction and radar detection accuracy,and that especially for UHF or lower frequency radar,the influence of tropospheric horizontal inhomogeneity can be ignored,but the influence of ionospheric horizontal inhomogeneity is greater,which needs to be mainly considered and corrected.The results in this paper provide a relatively strong reference and support for the demonstration,design and development of atmospheric refraction error correction for radar with different operating frequencies.

关 键 词：雷达 电波环境 水平不均匀性 折射误差修正 MM5模型 NeQuick模型 

分 类 号：TN957[电子电信—信号与信息处理]