一种嫦娥三号高程值的估计方法

doi:10.19665/j.issn1001-2400.2019.02.023

Abstract

Abstract:

According to the image taken by the Chang’e-3 as a near moon image, the elevation value cannot be obtained without a laser altimeter, and a method to estimate the elevation value of the Chang’e-3 is proposed. The method is based on the “Chang’e-2” multi-sensor data and trains the BP neural network model of the corresponding relationship between the feature descriptors and the elevation values in the image. Then, the corresponding elevation values are estimated using the features of the high precision image of the Chang’e-3. Exxperimental results show that the proposed method can reduce the elevation value estimation error to 3.94%. Therefore, the elevation value of the “Chang’e-3” is reliable and can be applied to high-precision moon reconstruction.

Key words: Chang’e-3, elevation value estimation, back propagation(BP) neural network, moon reconstruction

CLC Number:

TP39

ZHOU Zhezhe,ZHAO Meng,SHI Fan,CHEN Shengyong,LUAN Hao. Method for estimation of the elevation value of the Chang’e-3[J].Journal of Xidian University, 2019, 46(2): 139-144.

Figures/Tables 6

References 15

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编号	SIFT匹配点特征 (x₁,x₂,x₃,…,x₇₃)	匹配点坐标		高程值
编号	SIFT匹配点特征 (x₁,x₂,x₃,…,x₇₃)	左图坐标	右图坐标	高程值
1	(49.4200,16.2600,192,…,66)	(1.19423,2.91739)	(1.5290,3.3337)	(1689.6646)
2	(24.9800,20.4700,64,…,65)	(1.30565,4.69155)	(1.4831,6.5289)	(1417.2866)
3	(1.2025,49.8800,128,…,65)	(2.2391,3.14345)	(1.4806,5.3587)	(1636.9781)
4	(49.3247,64.0700,250,…,64)	(5.8586,3.6801)	(1.4007,6.5266)	(1398.8079)
5	(25.5880,85.3200,230,…,63)	(5.1953,2.4787)	(1.3760,1.3137)	(1559.0171)

算法	相对误差/%	运行时间/s
SURF+BP	13.00	66
SIFT+BP	5.24	50
文中算法	3.94	37

Method for estimation of the elevation value of the Chang’e-3

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