Paper Info
Title
The Scientific Information Model of Chang'e-4 Visible and Near-IR Imaging Spectrometer (VNIS) and In-Flight Verification.
Abstract
The Chang'e-4 (CE-4) lunar rover, equipped with a visible and near-IR imaging spectrometer (VNIS) based on acousto-optic tunable filter spectroscopy, was launched to the far side of the moon on December 8, 2018. The detection band of the VNIS ranges from 0.45 to 2.4 mu m. Because of the weak reflection of infrared radiation from the lunar surface, a static electronic phase-locked acquisition method is adopted in the infrared channel for signal amplification. In this paper, full-link simulations and modeling are conducted on the infrared channel information flow of the instrument. The signal characteristics of the VNIS are analyzed in depth, and the signal to noise ratio (SNR) prediction and laboratory verification are presented. On 4 January 2019, the VNIS started working successfully and acquired high-resolution spectrum data of the far side of the moon for the first time. Through analysis we have found that the SNR ratio is in line with our predictions, and the data obtained by VNIS in orbit are consistent with the information model proposed in this paper.
Year
DOI
Venue
2019
10.3390/s19122806
SENSORS
Keywords
Field
DocType
the Chang'e-4 lunar rover,phase-locked,signal-to-noise ratio,spectral resolution,infrared focal plane components
Far side of the Moon,Imaging spectrometer,Signal-to-noise ratio,Communication channel,Optics,Electronic engineering,Spectral resolution,Engineering,Information model,Infrared,Spectroscopy
Journal
Volume
Issue
ISSN
19
12.0
1424-8220
Citations 
PageRank 
References 
0
0.34
0
Authors
7
Name
Order
Citations
PageRank
Chunlai Li116.23
Zhendong Wang283.82
Rui Xu3209.75
Gang Lv400.34
Liyin Yuan500.34
Zhiping He612.38
Wang, Y.J.721621.29