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- W3146088124 abstract "High precision positioning of Chang'E-3 lunar lander is of great importance for the mission operations and relevant scientific investigations. In this research, we calculate the location of Chang'E-3 lander using Lunar Reconnaissance Orbiter(LRO) narrow angle camera(NAC) images and validate the precision with the Lunar Ranging Retro Reflectors(LRRRs). First, we pinpoint the Chang'E-3 lander and other landmarks(LRRR etc.) on multiple LRO NAC images by manual interpretation and high-precision image matching. Then the geodetic coordinates are derived from the image coordinates with the rigorous sensor models established with the refined orbiter positions and attitudes from NAIF SPICE kernels. Finally, the average geodetic coordinates are calculated and considered as the locations of Chang'E-3 and other landmarks. As a result, the location of Chang'E-3 is determined to be 44.1219?N, 19.5113?W using 14 LRO NAC images. The five LRRRs with high-precision absolute locations available are used as check points to evaluate the poisoning errors. The results show that the location accuracy can reach 20 m with a single LRO NAC image, and positioning the lander using multiple images reduces random errors and provides better accuracy than that using a single image." @default.
- W3146088124 created "2021-04-13" @default.
- W3146088124 creator A5047169267 @default.
- W3146088124 date "2015-01-01" @default.
- W3146088124 modified "2023-09-28" @default.
- W3146088124 title "Positioning and precision validation of Chang'E-3 Lander based on multiple LRO NAC images" @default.
- W3146088124 hasPublicationYear "2015" @default.
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