The penetrating depth analysis of Lunar Penetrating Radar onboard Chang'e-3 rover

	The penetrating depth analysis of Lunar Penetrating Radar onboard Chang'e-3 rover
	Xing, Shu-Guo1,2 ; Su, Yan1 ; Feng, Jian-Qing1 ; Dai, Shun1 ; Xiao, Yuan1 ; Ding, Chun-Yu1 ; Li, Chun-Lai1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2017-05-01
卷号	17 期号:5
关键词	space vehicles instruments: Lunar Penetrating Radar (LPR) techniques: radar astronomy method: radar equation method: correlation coefficient method
英文摘要	Lunar Penetrating Radar (LPR) has successfully been used to acquire a large amount of scientific data during its in-situ detection. The analysis of penetrating depth can help to determine whether the target is within the effective detection range and contribute to distinguishing useful echoes from noise. First, this study introduces two traditional methods, both based on a radar transmission equation, to calculate the penetrating depth. The only difference between the two methods is that the first method adopts system calibration parameters given in the calibration report and the second one uses high-voltage-off radar data. However, some prior knowledge and assumptions are needed in the radar equation and the accuracy of assumptions will directly influence the final results. Therefore, a new method termed the Correlation Coefficient Method (CCM) is provided in this study, which is only based on radar data without any a priori assumptions. The CCM can obtain the penetrating depth according to the different correlation between reflected echoes and noise. To be exact, there is a strong correlation in the useful reflected echoes and a random correlation in the noise between adjacent data traces. In addition, this method can acquire a variable penetrating depth along the profile of the rover, but only one single depth value can be obtained from traditional methods. Through a simulation, the CCM has been verified as an effective method to obtain penetration depth. The comparisons and analysis of the calculation results of these three methods are also implemented in this study. Finally, results show that the ultimate penetrating depth of Channel 1 and the estimated penetrating depth of Channel 2 range from 136.9m to 165.5m (epsilon(r) = 6.6) and from 13.0m to 17.5m (epsilon(r) = 2.3), respectively.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	PICKING
收录类别	SCI
语种	英语
WOS记录号	WOS:000405574100007
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8867]
专题	国家天文台_月球与深空探测研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xing, Shu-Guo,Su, Yan,Feng, Jian-Qing,et al. The penetrating depth analysis of Lunar Penetrating Radar onboard Chang'e-3 rover[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(5).
APA	Xing, Shu-Guo.,Su, Yan.,Feng, Jian-Qing.,Dai, Shun.,Xiao, Yuan.,...&Li, Chun-Lai.(2017).The penetrating depth analysis of Lunar Penetrating Radar onboard Chang'e-3 rover.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(5).
MLA	Xing, Shu-Guo,et al."The penetrating depth analysis of Lunar Penetrating Radar onboard Chang'e-3 rover".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.5(2017).