Precise Target Geo-Location of Long-Range Oblique Reconnaissance System for UAVs

doi:10.3390/s22051903

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	Precise Target Geo-Location of Long-Range Oblique Reconnaissance System for UAVs
	X. F. Zhang; G. Q. Yuan; H. W. Zhang; C. Qiao; Z. M. Liu; Y. L. Ding and C. Y. Liu
	2022
发表期刊	Sensors
卷号	22 期号:5 页码:26
摘要	High-precision, real-time, and long-range target geo-location is crucial to UAV reconnaissance and target strikes. Traditional geo-location methods are highly dependent on the accuracies of GPS/INS and the target elevation, which restricts the target geo-location accuracy for LRORS. Moreover, due to the limitations of laser range and the common, real time methods of improving the accuracy, such as laser range finders, DEM and geographic reference data are inappropriate for long-range UAVs. To address the above problems, a set of work patterns and a novel geo-location method are proposed in this paper. The proposed method is not restricted by conditions such as the accuracy of GPS/INS, target elevation, and range finding instrumentation. Specifically, three steps are given, to perform as follows: First, calculate the rough geo-location of the target using the traditional method. Then, according to the rough geo-location, reimage the target. Due to errors in GPS/INS and target elevation, there will be a re-projection error between the actual points of the target and the calculated projection ones. Third, a weighted filtering algorithm is proposed to obtain the optimized target geo-location by processing the reprojection error. Repeat the above process until the target geo-location estimation converges on the true value. The geo-location accuracy is improved by the work pattern and the optimization algorithm. The proposed method was verified by simulation and a flight experiment. The results showed that the proposed method can improve the geo-location accuracy by 38.8 times and 22.5 times compared with traditional methods and DEM methods, respectively. The results indicate that our method is efficient and robust, and can achieve high-precision target geo-location, with an easy implementation.
DOI	10.3390/s22051903
URL	查看原文
收录类别	sci
语种	英语
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67000
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. F. Zhang,G. Q. Yuan,H. W. Zhang,et al. Precise Target Geo-Location of Long-Range Oblique Reconnaissance System for UAVs[J]. Sensors,2022,22(5):26.
APA	X. F. Zhang,G. Q. Yuan,H. W. Zhang,C. Qiao,Z. M. Liu,&Y. L. Ding and C. Y. Liu.(2022).Precise Target Geo-Location of Long-Range Oblique Reconnaissance System for UAVs.Sensors,22(5),26.
MLA	X. F. Zhang,et al."Precise Target Geo-Location of Long-Range Oblique Reconnaissance System for UAVs".Sensors 22.5(2022):26.

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