CAJ | 학술논문

角闪烁的研究大多基于远场条件的假设,但是近场条件下,角闪烁对雷达的跟踪误差产生更大影响,近场角闪烁的研究更加具有学术和实际工程应用意义.该文推导了近场条件下角闪烁线偏差的解析计算方法,并将图形电磁学(GRECO)应用到近场角闪烁的预估中,使其具有实时性强、电大目标计算的能力且不需要散射中心的提取过程.雷达波束不完全覆盖目标的情况被首次考虑,使得全程估计目标的雷达跟踪误差成为可能.通过不同模型的仿真计算结果与理论计算结果比较,验证了计算方法的正确性.
각섬삭적연구대다기우원장조건적가설,단시근장조건하,각섬삭대뢰체적근종오차산생경대영향,근장각섬삭적연구경가구유학술화실제공정응용의의.해문추도료근장조건하각섬삭선편차적해석계산방법,병장도형전자학(GRECO)응용도근장각섬삭적예고중,사기구유실시성강、전대목표계산적능력차불수요산사중심적제취과정.뢰체파속불완전복개목표적정황피수차고필,사득전정고계목표적뢰체근종오차성위가능.통과불동모형적방진계산결과여이론계산결과비교,험증료계산방법적정학성.
@@@@The common predictions of angular glint are usually based on the condition of far-field hypothesis. However, computation of near field angular glint is very meaningful both in academic studies and engineering applications due to its huge impact on tracking error. This paper presents an analytic prediction of near field angular glint computing based on Graphic Electromagnetic Computing (GRECO), which is both in real time and on omission of the process of scattering center extraction. The condition that targets cannot be covered by radar beam is firstly considered, which makes the prediction of tracking error more complete. The correctness is validated by comparison between the simulated results and the theoretical ones of several models.