CAJ | 학술논문

对精测雷达低仰角测角误差规律进行研究，分析了精测雷达回波测量原理，并计算其天线差波束波瓣能量分布情况；研究雷达直射地物回波及地面遮挡对雷达跟踪目标的影响，并与传统多路径效应模型进行对比，得出传统多路径效应模型对雷达低仰角误差的影响并不是主要的；最后结合精测雷达对地物回波的实测数据得出雷达低仰角测角误差的真实变化规律。
대정측뢰체저앙각측각오차규률진행연구，분석료정측뢰체회파측량원리，병계산기천선차파속파판능량분포정황；연구뢰체직사지물회파급지면차당대뢰체근종목표적영향，병여전통다로경효응모형진행대비，득출전통다로경효응모형대뢰체저앙각오차적영향병불시주요적；최후결합정측뢰체대지물회파적실측수거득출뢰체저앙각측각오차적진실변화규률。
The low elevation angle error of precision instrumentation radar is studied in this paper. The echo measurement principle of precision instrumentation radar is analyzed. The lobes energy distribution of antenna difference beam is calculated. The effects of echo signals of direct ground object and the ground shielding on radar′s target tracking is researched. In compari-son with the traditional multipath effect model,it is found that the influence of the traditional multipath effect model on the ra-dar low elevation angle error is not important. The real changing rule of low elevation angle error of precision instrumentation ra-dar was obtained by the measured ground echo datas of precision instrumentation radar.