电波科学学报2024，Vol.39Issue(3)：570-578,9.DOI:10.12265/j.cjors.2023164
地基空间目标监视雷达大气折射误差修正方法研究
Atmospheric refraction error correction approach for ground-based space-target surveillance radar
摘要
Abstract
The vertical inhomogeneous distribution of the atmospheric medium can cause the refraction of propagating electromagnetic waves.In particular,the troposphere and ionosphere can lead to the delay and path bending of electromagnetic wave propagation,and thus cause errors of the measured range and angle for the ground-based space-target surveillance radar.In this paper,the model of the atmospheric refraction error is established based on the ray-tracing method.The accurate expression of the measured range and angle errors with regard to the vertical distribution of atmospheric refraction index is derived,and the principle and procedure for correcting the atmospheric refraction error of ground-based space-target monitoring radar is described in details,compared with the traditional error approximation model and correction method,the proposed error model is more accurate and the correction method is more effective.Based on the tropospheric and ionospheric models,the curve of vertically distributed characteristics of the atmospheric refraction index was calculated,and the numerical simulation of the atmospheric refraction error was carried out.The results show that the proposed method in this paper has higher error compensation accuracy and more robust performance at different intervals of atmospheric stratification,and the performance advantages are more remarkable in the case of low elevation.关键词
对流层/电离层/大气折射效应/地基空间目标监视雷达/大气折射误差修正Key words
troposphere/ionosphere/atmospheric refractive effect/ground-based space-target surveillance radar/atmospheric refraction error correction分类
信息技术与安全科学引用本文复制引用
汪昭凯,计一飞,董臻,唐飞翔,张永胜,张庆君,赵秉吉,高贺利..地基空间目标监视雷达大气折射误差修正方法研究[J].电波科学学报,2024,39(3):570-578,9.基金项目
国防科技大学科研计划项目(ZK21-06) （ZK21-06）
国家自然科学基金(62101568) （62101568）
