基于地球曲率模型和天波OTH雷达微多径效应的目标高度估计

IF 1.2 Q2 MATHEMATICS, APPLIED
Hou Chengyu, W. Yuxin, Chen Jiawei
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引用次数: 6

摘要

天波超视距雷达系统具有重要的远程战略预警价值。他们利用来自电离层的高频信号的天波传播反射,提供超远程监视能力,以探测和跟踪机动目标。当前的OTH雷达系统能够在距离和方位上定位目标,但无法实现可靠的瞬时高度估计。现有的天波OTH雷达测高方法大多利用了微多径效应,并考虑了平坦地球模型。然而,当探测距离超过1000公里时,由于不可避免地会产生较大的误差,因此平地模型并不适用。为了避免平坦地球模型带来的误差,本文将地球曲率模型引入到OTH雷达测高方法中。仿真结果表明,采用地球曲率模型可以有效地减小估计误差。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Estimating Target Heights Based on the Earth Curvature Model and Micromultipath Effect in Skywave OTH Radar
Skywave over-the-horizon (OTH) radar systems have important long-range strategic warning values. They exploit skywave propagation reflection of high frequency signals from the ionosphere, which provides the ultra-long-range surveillance capabilities to detect and track maneuvering targets. Current OTH radar systems are capable of localizing targets in range and azimuth but are unable to achieve reliable instantaneous altitude estimation. Most existing height measurement methods of skywave OTH radar systems have taken advantage of the micromultipath effect and been considered in the flat earth model. However, the flat earth model is not proper since large error is inevitable, when the detection range is over one thousand kilometers. In order to avoid the error caused by the flat earth model, in this paper, an earth curvature model is introduced into OTH radar altimetry methods. The simulation results show that application of the earth curvature model can effectively reduce the estimation error.
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来源期刊
Journal of Applied Mathematics
Journal of Applied Mathematics MATHEMATICS, APPLIED-
CiteScore
2.70
自引率
0.00%
发文量
58
审稿时长
3.2 months
期刊介绍: Journal of Applied Mathematics is a refereed journal devoted to the publication of original research papers and review articles in all areas of applied, computational, and industrial mathematics.
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